CITIZEN PROMASTER RC SS CB5000-50L | IRISIMO

CITIZEN PROMASTER RC SS CB5000-50L | IRISIMO
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[@adisdelahmet]

Great video.
I can’t find any tutorial for the calculations with the numbers on the crown.
Best regards

[@thelife8810]

Hey, cool video bro :)
I wanted to ask what charging the watch looks like in winter when there is no sunlight. Is it enough to charge the watch if you go out normally with the watch and have normal daylight without sun? Or is light from a lamp at home enough?
And after 2 years, you have any problems with the watch?

[@GM-xf8dc]

How can it be 200m water resist if there is no Screw-down Crown?

[@mikesk8sev]

Hello G M!
The screw-down crown is a feature that has little to no importance when it comes to water resistance. The WR is actually achieved through a system of seals and gaskets which prevent the water from entering the watch.
The role of a screw down crown is to keep the crown in a fixed position, in order to prevent you from accidentally pulling it out, especially in an underwater scenario. Of course it's also tightening the seal inside the crown but that is something that happens naturally anyway, due to the water pressure pushing the crown in - this was actually the principle of the super-compressor watches in the '60s and '70s.
I can only assume that you find it very common for the 200m WR rated watches to also have a screw-down crown. But you must also take into account that most of those are diver's watches. So, as per their intended purpose, it's very useful to also have the screw-down crown that won't allow the crown to be pulled out during the underwater activities.
However in this CITIZEN PROMASTER RC SS CB5000-50L's case, we're talking about a pilot's watch that is also water resistant enough to be worn during swimming, snorkeling and probably some skin diving, or at least that's what the manual recommends.
I've owned the watch for a year now, and it's an awesome everyday watch thanks to its many features, especially the alarm and the chronograph. In addition to those, it has a very tough build, notably the sapphire glass and of course, the high WR.
And last but not least, in case you're looking for an ISO certified solar diver's chronograph, also from Citizen, and at an even more affordable price, allow me to recommend the Citizen CA0718-13E, or any of its many other color variants. I own it and I also successfully tested it both in salt water and pools.
Best regards.