After watching for 5 years I finally found one video that explains accuracy and COSC issue most simpler. Lastly the Sinn accuracy surprised me astonishingly and totally changed my concept of accuracy. A big thanks Marc for this great video and your academic knowledge is far more impressive than any other watch guys in you tube. Long live and teach us more. Once again thanks and love from Bangladesh.
Your videos are so much more informative and to the point without any drama, dogs, animation and meaningless adjectives to describe the watch. You deserve far more subs.
I have an SEIKO SKX007 and it's makes -7 seconds per Day with heavy use, i go dancing and Mountainbiking 4 times a week and i am REALLY really amazed with this watch. Greetings from Costa Rica.
I have adjusted Seiko Presage 6L35 to within a couple of seconds per day. Very under rated brand still. I'd like to see a $500 Rolex that can keep up with a Seiko personally :)
Mark, that was a fantastic video. This series of yours should be required watching for anyone trying to get into the world of watches. Thank you for doing it! Hector
Marc truly is a smart man. I've learned a lot. The amazing thing is ; as a watch enthusiast, I didn't know I needed to know these things until Marc told me about them. 😂😉🤣
Thanks for a very informative video. My Vostoks run at about a minute fast or slow a week ,but I still love them and adjust them accordingly as we all do who have Mechanical watches?
Great video. Although it's a shame that chronometer settings don't hold over time. It is understandable since we are dealing with mechanical watches. But then it raises the question that do we need to spend extra for these chronometers to begin with as they will eventually lose the accuracy. And as mentioned even a regular watch can be serviced to chronometer standard.
What do you mean? You are spending extra for the supreme engineering, time spent and attention to detail. If you want value for money, just get a $10 digital Casio with chronograph, timer, perpetual calendar, calculator and a light that's almost bright enough to be used as a flashlight in the dark lol.
I'm starting to think of your titles as click-wait, instead of click-bait: unlike everyone else on youtube, you consistently under-sell and over-deliver. I kept seeing this and thinking, "I don't need to spend 23 minutes watching a video about how accurate chronometers are," but, as usual, your detailed description of the history and testing was fascinating beyond what the title promised.
Again with a great informative video, really appreciate for giving the knowledge in the simplest form for a lay man understanding. Thanks mark n Keep it up.
I picked up a Certina Quartz Chronometer while on business in Europe. This is a fantastic time piece. I prefer quartz when I am working. Can you recommend a German quartz Chronometer? If any.
I've never been lucky enough to have a Rolex, or any other that ran +\- 2 new or otherwise. Great video Marc, so thanks for making it. I appreciate it, and realize it's an old standard, but I switch so often it really doesn't matter, but I don't get worried about it until something is pretty far out of range.
Great video very informative. I had a bad experience with a Rolex watch and I wanted to see what is wrong with those watches. I got a new Rolex date just 2019, it gains time every day. 13.5 seconds every 72 hours. In 3 months of wearing it without adjusting the time it gain 7 minutes. Worth it? I don't thinks so. I don't wear it anymore. I just cant trust an overvalue brand that cant keep time right.
I have a chrono certificate from COSC but they didn't write any numbers on it. It came with the Tissot that says "Chronometer" on it, so I assume they certified it, but idk why the certificate would be blank.
I have a vintage chrometer. It's a Vostok Volna 2809 Precision from the 1950s. It's a homage to the 1948 Zenith 135. How the Soviets got the design is shrouded in mystery. No paperwork but it still keeps within 5 seconds per day. I have a Seagull m171s which has the Triovis Precision adjustment system in the movement. This is the more robust system than the Etachron used by the Swiss. My Seagull keeps within 2 to 3 seconds per day. You could do a video on the Triovis and Etachron systems and their relative merits.
Hey Marc, first of all thank you for your expertise! I learned a lot from your vids. Nice that you mention at the end that it has'nt got to be a chronometer certified watch in terms of accuracy! I own a Sinn Aquis date with the Sellita SW 200-1. At the moment it runs +/- 1 sec per day! It's all about regulation ;-) Greetings from Germany
My steinhart in the 5th position gains 6 sec day crown up is 3 sec a day wound once a day out of rotation. Worn it deviates between 3 to 6 per day occasionally plus 7. Regularly wearing it seems to hold better a accuracy. Now pretty regularly resting it between wearing the seconds seem to be reproduced very well. So even though not cosc standards I would say its reasonably accurate but highly precise since reproduced times are constant if I have that correct. Cosc as I see it is a repeatable standard for certification. I'm familiar with this methodology because we use standards like this in analytical chemistry on geologic samples showing how much of an element like mercury will come out of an environmental sample treated for stabilization prior to landfill. Per EPA standards TCLP We agitate a 20 gram sample for 16 hours in a water solution spiked with inorganic acids to 5.7 pH then the resultant tested solvent has to be below 5ppb Hg mercury or other levels for other substances before it can be land filled. This TCLP test toxic caracteristic leaching procedure is supposed to emulate rainfall for 16 hours through the landfill. 5.7 is the natural pH of rain water. Yes Virginia ALL rainfall is acidic due to carbonic acid in the atmosphere.
Marc, a question you might able to answer. Are all chronometer movements top movements. Top movements being decorated and better parts like shock protection (incabloc) and better hair spring (nivarox). And what do you think about omegas meta certified process.
Hi MArc...can you use that equipment to check a spring drive accuracy? I was thinking the machine uses a microphone checking the escapement so it wouldnt work with the spring drive?
My Christopher Ward Trident COSC chronometer (ETA 2836) started losing 8 seconds per day after I took it swimming for the first time. Very odd as it's less than six months old. It's back at CW at the moment under their 5 year movement warranty....
This is a Swiss Standard, right Marc ? Is there any equivalent standard for japanese fine wristwatch industry ? I know all mechanical GS exceed COSC requirements, but can they, as a japanese brand, require a COSC certification ?
The Swiss one is the most recognized. If you go to Wikipedia, they talk about others. But, technically, only those certified by COSC can carry the Chronometer mark.
After the Swiss got all pissy with Seiko for using the Chronometer label on their watches and sent Seiko a strongly worded cease and desist letter, I believe that a Japanese association was formed for independant testing to chronometer standards. I think it went kaput at some point though. You're right. Grand Seiko 9F series movements must achieve -3/+5 seconds/day in order to pass inspection. In 6 positions. As unnatural (as Marc said) it may be, Seiko believe that it should still be part of the testing procedure. My Grand Seiko runs about 2 seconds fast/day. Actually, my SARB035 runs to better than COSC standards.
Plus or minus x seconds per a given time period are not always additive; they can be subtractive. So a COSC mechanical movement could hold time to within a few seconds per month or per quarter or.....etc.
So, if someone in 2017 is selling say a vintage watch with an ETA movement that was once COSC certified, does that mean the seller could ask for a bigger price? In other words, am I correct in thinking that what distinguishes a COSC movement is the adjustment/regulation process it goes through and not the movement per se?
Long Island Watch. Understand. So the stamping on the dial of a Rolex "superlative chronometer" is a time sensitive state. In other words Rolex assumes you will get it back to COSC once it falls out of accuracy. I can't believe that every Rolex owner with a "superlative chronometer" stamped on the dial would be sending their watch back to the Swiss for re-Coscing...😵😵😵😵
Hey Mark! Thanks for the video, I have a certified chronometer (an Omega Sea Master Ploprof 1200) from 2012 and right now it is always doing -2 seconds a day no matter what position I put it in, it never does any positive time, it always does minus 2 seconds. I tried to set it on the table in all different positions over night and it's always the same outcome. Does that mean it needs to be serviced? It has a caliber 8500.
It's just interesting to me that it's always -2 regardless of position. But you are right it is well within spec, I might ask my local watch maker to regulate it for me when I pass by there. Thanks for the video as always, extremely informative!
Yes, it is! I am just concerned that it is always -2 regardless of the position, it never goes positive (to cancel out the error for example), and I think with a bit of regulation I can get it to even do better!
Marc, My Omega and Tudor Pelagos will track at 1 to 3 seconds minus daily if left tosit face up and not worn. If I wear either for all day or all night they will not be that great on hack. I assume it is normal to see COSC timepieces wander like this when worn all night? I sleep with a watch on sometimes. Sometimes a Gshock sometimes my new pretties. This is OK I assume?
I bought a Ball engineer 2 skindiver, 2824-2 chronometer grade, decorated. Tritium glass tubes, sapphire protected bezel. Real good looking watch. I'm loving it. Got a deal on it too. $1,700. Also has an amazing bracelet.
That 12 year old Rolex needs more than just a 'tweak' . When a mechanical watch gets to the 4-5 year mark....any mechanical watch, including Rolex...the lubricants in the movement are broken down and dried out. Don't be tempted to open up the back and hose it down with WD-40 either...yes watch owners have done that...even with Rolex. Srsly, don't do that. Once the lubricants are dry, the only thing that will bring the watch back is to have it fully serviced. Full movement service starts with having the movement fully disassembled. Next the parts are placed into a special cleaning solution and spun around in watch parts cleaning machine. The parts are dried and then reassembled, lubricated with special watch oils that cost $30 for a couple of millilitres and then regulated. The serviced movement is then cased, the old gaskets replaced and the case is tested for leaks. When dealing with Rolex it's best to have the watch sent back to an authorized Rolex service center. Only an authorized Rolex service center can obtain genuine parts if any are needed. Servicing a Rolex with non-Rolex parts will greatly diminish the value of the watch. None of this comes cheap. The average Rolex service is around $800 assuming that no new parts are needed outside of gaskets. Skipping the service will result in more than a watch that no longer keeps good time. Once the lubricants are dry, the parts in the movement will wear at an accelerated rate causing damage. Genuine Rolex replacement parts cost an astronomical amount. Not only does Rolex cost a lot to obtain, it costs a lot to maintain. It's like having a supermodel girlfriend on your wrist.
The 6r15d in my seiko runs perfect during the day at work it looses time to about 3-4 seconds at rest after work it gains what it lost going to about + 2-3/d
New gen 3235 in my Rolex Datejust 41 settled to +1s/day on the wrist. Workhorse 3135 in my ceramic Rolex Submariner +3s/day. Rotary Cambridge Miyota +8s/day. The new generation Rolex movements are the most accurate, reliable mass produced engines in existence. And the minimum 70 hours power reserve is just ridiculous. But such micro engineering costs. But what’s even more outstanding is the performance of a mechanical watch which cost me 150 bucks. 56 seconds gained over 604,800 in a week. +0.00926% variance per week. For peanuts... discuss...
Very knowledgeable no doubt, but in the end if you want accuracy buy a proper quality solar quartz , no horological significance but you’ll be on time to watch marks vids
I'm 70+ y/o, my Rolex is 35+ y/0 still keeps COSC time. Seiko, Heuer, Omega (Semaster 1965), all others either breakdown or keep inaccurate time. In life, ask why am I doing this? Rolex is one of the few sure things. Buy one & keep it in tune. Death, taxes, Rolex.
Be warned that some China based brands will use 'chronometer' in their descriptions and even on the dials of models that are not verified chronometers. So if you see an inexpensive 'chronometer' online from a brand you don't recognize, do some homework before buying it.
Your Timegrapher is far more accurate than a mech :Rolex. !!. The Timegrapher has a crystal oven. Stable crystal temperature. and is timed by the atomic clock !!". So my 1900 says anyway. My Grandsons Longines keeps time to -2 to +2 Sec`s daily.at the moment. The Best mech: watch in the house. The best is a Pulsar Quartz of course. My old Dads 1949 Certina keeps around 12 Secs daily but is a little erratic (-6 to +12) on the wrist !. Cleaned, degaussed and timed it recently. Not bad eh!.
It is pretty much a social and an economic/commercial construction rather than any scientific statement of accuracy. A restricted practice rather than a universal standard.
Nothing wrong with an international standard, but a standard that has to be verified by only one institution in one country is what I call restrictive, it does not guarantee that there are not watches out there which can be regulated to just as accurate. Restricting the usage of the word chronometer to signify a watch certified by COSC means the word acts more like a trademark than anything else.
inregionecaecorum that's what I thought for 20 years before I got bored with quartz and switched to automatics. At the moment I have a Seiko SNK803 which is consistently plus 0.3s a day. Better than quartz.
I have one of the original G Shocks, bought in 1984, never serviced, it’s brilliant, but it’s not accurate at all for a quartz, about a minute fast per 3 months.
Just discovered your videos and loving them. I was looking around for information as I'm honoured that my wife just bought me an Omega Seamaster Chronograph for my 50th birthday. Although, I still love my Citizen Skyhawk and my Citizen Divers watch :-) P.S. as of 2020, Omega don't supply the certificate, but on their web site you can obtain the test information, which I must get round to doing.
Does the accuracy standard tend to successfully make the jump from the movement testing out in controlled lab conditions, to a finished, encased watch with face and hands, on a live, active end user?
Thanks for this video, Marc. Do automatic movements drift so many seconds in one direction like a quartz watch, or drift plus or minus depending on position?
Great stuff .Up until a few weeks ago I'd stopped wearing watches completely and had zero interest Then I decided to look into a new dive watch and entered a rabbit hole that dont ever want to leave and your videos are a massive part of that as take things to another level in detail .Still have nt made my main purchase but have bought 3 other watches in the meantime and the knowledge I 'm gaining is great and a lot of fun too .When you have guys like you ,just one more watch ,urban gentry and timeteller the love and enthusiasm comes thru to the viewer and now I'm in love with watches too .Priceless.
Thumbs up man awesome videos you put out I find myself getting lost in watching so many of them. The watch and learn series is awesome I’ve learned a ton from watching them. I wear a Seamaster 300m I wanted the Speedmaster but I wear mine day in and out running heavy equipment and the Speedmaster just had more than I need. Keep up the good work!
After watching for 5 years I finally found one video that explains accuracy and COSC issue most simpler. Lastly the Sinn accuracy surprised me astonishingly and totally changed my concept of accuracy. A big thanks Marc for this great video and your academic knowledge is far more impressive than any other watch guys in you tube. Long live and teach us more. Once again thanks and love from Bangladesh.
Thanks so much for watching!
Your videos are so much more informative and to the point without any drama, dogs, animation and meaningless adjectives to describe the watch. You deserve far more subs.
We will get there, thank you!
I have an SEIKO SKX007 and it's makes -7 seconds per Day with heavy use, i go dancing and Mountainbiking 4 times a week and i am REALLY really amazed with this watch. Greetings from Costa Rica.
Pj Rive a legendary timepiece
I have adjusted Seiko Presage 6L35 to within a couple of seconds per day. Very under rated brand still. I'd like to see a $500 Rolex that can keep up with a Seiko personally :)
Mark, that was a fantastic video. This series of yours should be required watching for anyone trying to get into the world of watches. Thank you for doing it!
Hector
Haha, thank you!
Marc truly is a smart man. I've learned a lot. The amazing thing is ; as a watch enthusiast, I didn't know I needed to know these things until Marc told me about them. 😂😉🤣
Thanks for a very informative video. My Vostoks run at about a minute fast or slow a week ,but I still love them and adjust them accordingly as we all do who have Mechanical watches?
Great video. Although it's a shame that chronometer settings don't hold over time. It is understandable since we are dealing with mechanical watches. But then it raises the question that do we need to spend extra for these chronometers to begin with as they will eventually lose the accuracy. And as mentioned even a regular watch can be serviced to chronometer standard.
What do you mean? You are spending extra for the supreme engineering, time spent and attention to detail.
If you want value for money, just get a $10 digital Casio with chronograph, timer, perpetual calendar, calculator and a light that's almost bright enough to be used as a flashlight in the dark lol.
I'm starting to think of your titles as click-wait, instead of click-bait: unlike everyone else on youtube, you consistently under-sell and over-deliver.
I kept seeing this and thinking, "I don't need to spend 23 minutes watching a video about how accurate chronometers are," but, as usual, your detailed description of the history and testing was fascinating beyond what the title promised.
Great video. Just enough technical info to explain things without getting into the weeds.
Thanks; I try to keep it light.
great work on all these videos, helping me to get started with automatic watches. much love from germany
Thank you.
Again with a great informative video, really appreciate for giving the knowledge in the simplest form for a lay man understanding. Thanks mark n Keep it up.
thanks.
I picked up a Certina Quartz Chronometer while on business in Europe. This is a fantastic time piece. I prefer quartz when I am working. Can you recommend a German quartz Chronometer? If any.
Just discovered your channel and now a new subscriber.
Thank you very much for sharing your knowledge, passion and expertise on the subject.
I've never been lucky enough to have a Rolex, or any other that ran +\- 2 new or otherwise. Great video Marc, so thanks for making it. I appreciate it, and realize it's an old standard, but I switch so often it really doesn't matter, but I don't get worried about it until something is pretty far out of range.
Right!
Great video very informative. I had a bad experience with a Rolex watch and I wanted to see what is wrong with those watches. I got a new Rolex date just 2019, it gains time every day. 13.5 seconds every 72 hours. In 3 months of wearing it without adjusting the time it gain 7 minutes. Worth it? I don't thinks so. I don't wear it anymore. I just cant trust an overvalue brand that cant keep time right.
Another great video. I really enjoy watching these. Keep up the good work!
Thanks!
I have a chrono certificate from COSC but they didn't write any numbers on it. It came with the Tissot that says "Chronometer" on it, so I assume they certified it, but idk why the certificate would be blank.
I love your videos ! It is like having my own horology classes ! Thanks again !
Thanks for watching!
Thank you. Good explanation. Is it possible to adjust the quartz movement for accuracy?
This video is phenomenal. Thank you so much for making a video like this. It is so informative and I love show you show your own test in real time
Thanks for watching!
I have a vintage chrometer. It's a Vostok Volna 2809 Precision from the 1950s. It's a homage to the 1948 Zenith 135. How the Soviets got the design is shrouded in mystery. No paperwork but it still keeps within 5 seconds per day.
I have a Seagull m171s which has the Triovis Precision adjustment system in the movement. This is the more robust system than the Etachron used by the Swiss. My Seagull keeps within 2 to 3 seconds per day. You could do a video on the Triovis and Etachron systems and their relative merits.
Rolex continues to surprise me.. I always wondered why they cost so, so much more than other similar pieces. It's becoming a clearer picture.. awesome
Fantastic pieces.
Hey Marc,
first of all thank you for your expertise!
I learned a lot from your vids.
Nice that you mention at the end that it has'nt got to be a chronometer certified watch in terms of accuracy!
I own a Sinn Aquis date with the Sellita SW 200-1.
At the moment it runs +/- 1 sec per day!
It's all about regulation ;-)
Greetings from Germany
That's awesome, enjoy!
Marc? What was the third watch you put on the time grapher? Seems a very interesting company if they build such capable watches.
Sinn
wow. I would not have guessed that.
The watch isn't actually running
My steinhart in the 5th position gains 6 sec day crown up is 3 sec a day wound once a day out of rotation. Worn it deviates between 3 to 6 per day occasionally plus 7.
Regularly wearing it seems to hold better a accuracy.
Now pretty regularly resting it between wearing the seconds seem to be reproduced very well. So even though not cosc standards I would say its reasonably accurate but highly precise since reproduced times are constant if I have that correct.
Cosc as I see it is a repeatable standard for certification.
I'm familiar with this methodology because we use standards like this in analytical chemistry on geologic samples showing how much of an element like mercury will come out of an environmental sample treated for stabilization prior to landfill.
Per EPA standards TCLP
We agitate a 20 gram sample for 16 hours in a water solution spiked with inorganic acids to 5.7 pH then the resultant tested solvent has to be below 5ppb Hg mercury or other levels for other substances before it can be land filled. This TCLP test toxic caracteristic leaching procedure is supposed to emulate rainfall for 16 hours through the landfill.
5.7 is the natural pH of rain water.
Yes Virginia ALL rainfall is acidic due to carbonic acid in the atmosphere.
Great video Marc as usual
Thank you.
The Yachtmaster is the star of this show...Love it !
Excellent job as always, Mark! -GCR
Thank you sir!
Why do i feel just a little smarter after watching this ? 😁 great video Marc..
Great side effect!
My Longines automatic watch runs + 1-2 sec/ day without any kind of certifications :)
This man is a mix of Mr. Bean and Charlie Sheen
With a bit of Victor Mature too.
Dang, I love that Sinn!
Me too; it's a brick.
Yeah. cant beat 'shack' for time hack! 00, wow.
I just love how it keeps showing 0 sec/day AND no beat error whatsoever !!! Amazing !
It isn't running at all, that's why it hits 0 across the board
@@ХристоМартунковграфЛозенски that's actually because it isn't running at all. Watch the hands, no movement
Marc, a question you might able to answer. Are all chronometer movements top movements. Top movements being decorated and better parts like shock protection (incabloc) and better hair spring (nivarox). And what do you think about omegas meta certified process.
Please how to reset 24h on edifice Casio watch ef 554
Wow! The seiko monster orange! I badly need one :-( Thank you so much for your videos, all very informative!!
Highly informative review. Many thanks.
What about the omega METAS master chronometer? In which category will fall?
Hi MArc...can you use that equipment to check a spring drive accuracy? I was thinking the machine uses a microphone checking the escapement so it wouldnt work with the spring drive?
Any plan to do a video on atomic syncing or even GPS watches? That's kind of the other technical extreme of accurate timekeeping.
I guess it's possible, though is it interesting? Not many people would get the circuitry (me included!)
My Christopher Ward Trident COSC chronometer (ETA 2836) started losing 8 seconds per day after I took it swimming for the first time. Very odd as it's less than six months old. It's back at CW at the moment under their 5 year movement warranty....
This is a Swiss Standard, right Marc ? Is there any equivalent standard for japanese fine wristwatch industry ? I know all mechanical GS exceed COSC requirements, but can they, as a japanese brand, require a COSC certification ?
ISO standards are international accepted quality standards. ISO regulates quality standards for nearly every area of industry/production.
The Swiss one is the most recognized. If you go to Wikipedia, they talk about others. But, technically, only those certified by COSC can carry the Chronometer mark.
After the Swiss got all pissy with Seiko for using the Chronometer label on their watches and sent Seiko a strongly worded cease and desist letter, I believe that a Japanese association was formed for independant testing to chronometer standards. I think it went kaput at some point though.
You're right. Grand Seiko 9F series movements must achieve -3/+5 seconds/day in order to pass inspection. In 6 positions. As unnatural (as Marc said) it may be, Seiko believe that it should still be part of the testing procedure.
My Grand Seiko runs about 2 seconds fast/day. Actually, my SARB035 runs to better than COSC standards.
Fascinating
Thx Marc! Do you anticipate carrying any chronometers in the future?
I have in the past, so I wouldn't rule it out.
Plus or minus x seconds per a given time period are not always additive; they can be subtractive. So a COSC mechanical movement could hold time to within a few seconds per month or per quarter or.....etc.
Yes!
How do they power the mechanical......one winding per 24hrs?? how many times......this is probably the greatest variable.
So, if someone in 2017 is selling say a vintage watch with an ETA movement that was once COSC certified, does that mean the seller could ask for a bigger price? In other words, am I correct in thinking that what distinguishes a COSC movement is the adjustment/regulation process it goes through and not the movement per se?
It's the testing it undergoes; but if its vintage, it's probably out of COSC specs by now.
Long Island Watch. Understand. So the stamping on the dial of a Rolex "superlative chronometer" is a time sensitive state. In other words Rolex assumes you will get it back to COSC once it falls out of accuracy. I can't believe that every Rolex owner with a "superlative chronometer" stamped on the dial would be sending their watch back to the Swiss for re-Coscing...😵😵😵😵
Thanks for the video! Very informative!
Glad you enjoyed.
Long Island Watch Definitely. Much appreciated!
Excellent Marc!
Thanks!
Yep, Longines Hydroconquest Quartz movements are black-belt ... 7 jewel high quality ETA movements ...
mark please review a seiko Irish coffee limited edition watch,tq
Hey Mark! Thanks for the video, I have a certified chronometer (an Omega Sea Master Ploprof 1200) from 2012 and right now it is always doing -2 seconds a day no matter what position I put it in, it never does any positive time, it always does minus 2 seconds. I tried to set it on the table in all different positions over night and it's always the same outcome. Does that mean it needs to be serviced? It has a caliber 8500.
It's operating well within spec; but you can just regulate it up a bit.
It's just interesting to me that it's always -2 regardless of position. But you are right it is well within spec, I might ask my local watch maker to regulate it for me when I pass by there. Thanks for the video as always, extremely informative!
-2 is insanely good timekeeping
Yes, it is! I am just concerned that it is always -2 regardless of the position, it never goes positive (to cancel out the error for example), and I think with a bit of regulation I can get it to even do better!
I guess I’m lucky. My Rolex 1570 gains a couple while wearing, loses a couple at night, and 6 months later it was spot on without setting or winding.
Vert interesting. Thanks Mark.
Marc, My Omega and Tudor Pelagos will track at 1 to 3 seconds minus daily if left tosit face up and not worn. If I wear either for all day or all night they will not be that great on hack. I assume it is normal to see COSC timepieces wander like this when worn all night? I sleep with a watch on sometimes. Sometimes a Gshock sometimes my new pretties. This is OK I assume?
They should keep great time in all positions and all combinations thereof.
well they are both new... should I talk to the dealers for a look see? strange that both would do it. Both are less than 2 months old.
My Tissot Seastar 1000 is running at -2/day. I'm so lucky.
I bought a Ball engineer 2 skindiver, 2824-2 chronometer grade, decorated. Tritium glass tubes, sapphire protected bezel. Real good looking watch. I'm loving it. Got a deal on it too. $1,700. Also has an amazing bracelet.
That 12 year old Rolex needs more than just a 'tweak' . When a mechanical watch gets to the 4-5 year mark....any mechanical watch, including Rolex...the lubricants in the movement are broken down and dried out. Don't be tempted to open up the back and hose it down with WD-40 either...yes watch owners have done that...even with Rolex. Srsly, don't do that. Once the lubricants are dry, the only thing that will bring the watch back is to have it fully serviced. Full movement service starts with having the movement fully disassembled. Next the parts are placed into a special cleaning solution and spun around in watch parts cleaning machine. The parts are dried and then reassembled, lubricated with special watch oils that cost $30 for a couple of millilitres and then regulated. The serviced movement is then cased, the old gaskets replaced and the case is tested for leaks. When dealing with Rolex it's best to have the watch sent back to an authorized Rolex service center. Only an authorized Rolex service center can obtain genuine parts if any are needed. Servicing a Rolex with non-Rolex parts will greatly diminish the value of the watch. None of this comes cheap. The average Rolex service is around $800 assuming that no new parts are needed outside of gaskets. Skipping the service will result in more than a watch that no longer keeps good time. Once the lubricants are dry, the parts in the movement will wear at an accelerated rate causing damage. Genuine Rolex replacement parts cost an astronomical amount. Not only does Rolex cost a lot to obtain, it costs a lot to maintain. It's like having a supermodel girlfriend on your wrist.
My Certina DS Action Powermatic80 is running -3 secs a day.
Great video!
Thank you for watching.
So what is the Geneve Seal ??
A higher echelon of watchmaking; it's not just accuracy.
What’s a Perlative Cerenometer?
That's a mark of true quality that every Rolleck's Cosmogroove DayTune and every Rollckex Sambariner has to have !
The 6r15d in my seiko runs perfect during the day at work it looses time to about 3-4 seconds at rest after work it gains what it lost going to about + 2-3/d
very informative
Glad you enjoyed.
just buy quartz, it will blow the "Certified Chronometer" away
Great presentation and explanation!
I may have to invest in a chronometer when I am adding more mechanical pieces to my collection.
Thank you!
You forgot to wind that watch at the very end. 0 across the board tends to happen when the watch isn't running at all
Cover on watches with longest batteries
New gen 3235 in my Rolex Datejust 41 settled to +1s/day on the wrist. Workhorse 3135 in my ceramic Rolex Submariner +3s/day. Rotary Cambridge Miyota +8s/day.
The new generation Rolex movements are the most accurate, reliable mass produced engines in existence. And the minimum 70 hours power reserve is just ridiculous. But such micro engineering costs. But what’s even more outstanding is the performance of a mechanical watch which cost me 150 bucks. 56 seconds gained over 604,800 in a week. +0.00926% variance per week. For peanuts... discuss...
just +2 seconds in a whole month! My 3235 is +18 per month. consider this ruclips.net/video/X_RJu14k_i0/видео.html
Great Vid!!Do u wanna sell that Breitling?
I bought it used years ago; I love it. NOPE!
Long Island Watch lol..I hear ya!I wouldn't either.. Beautiful Piece!!
Can an atomic watch be certified as an atomic watch?
Only if it can withstand 16 days in the core of a nuclear reactor!
@@TheHobbyist412 I really meant can an atomic watch be certified as a chronometer?
Very knowledgeable no doubt, but in the end if you want accuracy buy a proper quality solar quartz , no horological significance but you’ll be on time to watch marks vids
I'm 70+ y/o, my Rolex is 35+ y/0 still keeps COSC time. Seiko, Heuer, Omega (Semaster 1965), all others either breakdown or keep inaccurate time. In life, ask why am I doing this? Rolex is one of the few sure things. Buy one & keep it in tune. Death, taxes, Rolex.
Two thumbs up !
Engineers rule and always will!
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Wow...a Rolex is really something
It sure is!
Superb video, check the Sinn out, haha!
Be warned that some China based brands will use 'chronometer' in their descriptions and even on the dials of models that are not verified chronometers. So if you see an inexpensive 'chronometer' online from a brand you don't recognize, do some homework before buying it.
Your Timegrapher is far more accurate than a mech :Rolex. !!. The Timegrapher has a crystal oven. Stable crystal temperature. and is timed by the atomic clock !!". So my 1900 says anyway. My Grandsons Longines keeps time to -2 to +2 Sec`s daily.at the moment. The Best mech: watch in the house. The best is a Pulsar Quartz of course. My old Dads 1949 Certina keeps around 12 Secs daily but is a little erratic (-6 to +12) on the wrist !. Cleaned, degaussed and timed it recently. Not bad eh!.
Not bad at all, thanks for sharing.
🍀👍🍀🤔
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here is the 10th coment
Stop it with all them negative waves about the timegrapher!
It is pretty much a social and an economic/commercial construction rather than any scientific statement of accuracy. A restricted practice rather than a universal standard.
That's not true. It's held to an ISO standard, which is exactly what scientific is.
Nothing wrong with an international standard, but a standard that has to be verified by only one institution in one country is what I call restrictive, it does not guarantee that there are not watches out there which can be regulated to just as accurate. Restricting the usage of the word chronometer to signify a watch certified by COSC means the word acts more like a trademark than anything else.
Using a vostok with -2 +6 seconds AN HOUR! 😂
It cant run -2 +6 an hour.
"When people wanna watch thats got guaranteed accuracy, you have to buy" .... Quartz.
True!
inregionecaecorum that's what I thought for 20 years before I got bored with quartz and switched to automatics. At the moment I have a Seiko SNK803 which is consistently plus 0.3s a day. Better than quartz.
I have one of the original G Shocks, bought in 1984, never serviced, it’s brilliant, but it’s not accurate at all for a quartz, about a minute fast per 3 months.
Another informative video. FYI, Certina has a quartz chronometer. I bought one for my father.
Marc you guys need to cut a deal with Sinn! Watchbuys prices are outrageous
Contact Sinn on my behalf. I tried to talk to them at Basel but they only want to deal with WB.
Is that Sinn at the end of the video a mechanical or a quartz? Can you even use that timegrapher on a quartz? Thanks.
It's mechanical. Valjoux 7750
i had been wrong all this while. i thought chronometer = chronograph. Tks Marc! Now i know better.
Glad its cleared up now!
Q: Why in the heck is the standard +6/-4 and not +5/-5?
Just discovered your videos and loving them. I was looking around for information as I'm honoured that my wife just bought me an Omega Seamaster Chronograph for my 50th birthday. Although, I still love my Citizen Skyhawk and my Citizen Divers watch :-) P.S. as of 2020, Omega don't supply the certificate, but on their web site you can obtain the test information, which I must get round to doing.
Does the accuracy standard tend to successfully make the jump from the movement testing out in controlled lab conditions, to a finished, encased watch with face and hands, on a live, active end user?
This is pure porn! I thank you?! Len
dafuq dude
@@LabuanImpact למה דפוק?
Thanks for this video, Marc. Do automatic movements drift so many seconds in one direction like a quartz watch, or drift plus or minus depending on position?
Great stuff .Up until a few weeks ago I'd stopped wearing watches completely and had zero interest
Then I decided to look into a new dive watch and entered a rabbit hole that dont ever want to leave and your videos are a massive part of that as take things to another level in detail .Still have nt made my main purchase but have bought 3 other watches in the meantime and the knowledge I 'm gaining is great and a lot of fun too .When you have guys like you ,just one more watch ,urban gentry and timeteller the love and enthusiasm comes thru to the viewer and now I'm in love with watches too .Priceless.
True2022 brilliant, you’ve picked the best reviewers, right there!
Thumbs up man awesome videos you put out I find myself getting lost in watching so many of them. The watch and learn series is awesome I’ve learned a ton from watching them. I wear a Seamaster 300m I wanted the Speedmaster but I wear mine day in and out running heavy equipment and the Speedmaster just had more than I need. Keep up the good work!
Thanks!
Are you sure you can bring a Seiko movement to COSC? I think they only do the Swiss-made mechanisms.
Certina ds action diver quartz is cosc certified ( chronometer)
😂 what a load of bs. i thought chronometer was a thing.