Mi Band 7 Scientific Review
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- Опубликовано: 23 июл 2024
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Timestamps:
00:00 Background
01:37 10 Things to Know
03:55 Heart Rate Test Spinning
07:41 Heart Rate Test Cycling
10:15 Heart Rate Test Weight Lifting
11:07 Sleep Stage Testing
15:13 Sleep Stage Test Overview
16:29 SpO2 Test
18:27 Step Test
20:15 Potential Issue with the Mi Band 7
20:39 Health Tracking Conclusions
21:28 Final Thoughts
Introduction:
This is the new Mi Band 7, which still resembles its predecessor, but now has a larger 1.62-inch always-on AMOLED display. However, as impressive as that beautiful and bright display is, can the new Mi Band 7 reliably measure and track your health metrics? Over the last few days I have done different scientific tests on this new Mi Band 7, and I found it seems to be good at some things, but also struggles with some specific measurements. Now, in other videos I have shown that the previous generation, the Mi Band 6, was pretty bad when it was launched, but it improved quite drastically with firmware updates. Let’s see if this new Mi Band 7 also needs some time to get good performance, or if it is already quite good from the start. In this video, I will do some initial scientific testing of the heart rate measurements, sleep tracking, oxygen saturation measurements and step counting of the Mi Band 7. Now, this is a first set of tests, as I just received the device this week, and a full scientific review will follow as I do more detailed tests over the next few weeks.
The first thing you will notice about the new Mi Band is that it’s bigger, with a 1.62-inch Always-on AMOLED display compared to the 1.56-inch display of the Mi Band 6, which according to Xiaomi, increases the viewing area by 25%. However, the pixel density remains the same as before at 326 PPI. Xiaomi also created new icons, new effects, and restyled data visuals to go with this larger display. The Mi Band 7 is said to have 120 sports modes, and now has continuous blood oxygen monitoring and low SpO2 alerts. In addition, the Mi Band 7 also has all-day heart rate monitoring, sleep monitoring and also stress monitoring, which as you might know, I am generally quite skeptical of. The Mi Band 7 is water resistant up to 5 atmospheres, similar to the Mi Band 6, which means it can withstand water pressures equivalent to a depth of 50 meters. The main thing that is lacking is that it still doesn’t have built-in GPS. Xiaomi says that the Mi Band 7 has a battery life of 14 days with regular usage, however, I haven’t been able to validate this yet. Also, a lot of the more advanced features, like always on display, continuous SpO2 measurements and stress monitoring will drain the battery faster. It is a bit unclear what the band will sell for in the US and Europe, but it will probably be around 50 dollars. Now, I was able to connect the Mi Band 7 to two different apps on iOS: Mi Fitness and Zepp Life. I ended up using Zepp life, because that was the only way I was able to export my exercises to Strava. I had to do it indirectly though, by logging into the normal Zepp app with the same account. 
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![MI BAND 7 by Xiaomi - Big Changes!! - [⌚ larger display, AOD, amazing health tracking, & more🔥]](http://i.ytimg.com/vi/3RstKwFq-98/mqdefault.jpg)
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Hope you enjoyed this initial test of the Mi Band 7. A more detailed test will follow in ~ 3 weeks!
Can you please share these correlation graphs on your website as a live visualization/ vector image or a high resolution static image/ PDF? Every time I wish to compare a few I have to go searching through the videos.
It would really help with recall and summarize old and new tests across time.
I think you can analyze the amazfit band 7. They say their results are superior. Thank you for your work.
Thanks for in-depth review, any suggest which test should i compare if i use it for my running?
waiting on the detailed review of the Mi Band 7! Hope it comes soon. :)
Hi Rob!
The new mi band 8 is out. And the manufacturer is different from the past generations. This generation is directly manufactured by Xiaomi, while the past ones were actually by Amazfit.
I tested the accuracy of its optical heart rate sensor. Compared to my chest strap, it’s surprisingly accurate. Even does not have the 5 sec delay which the Apple watches do.
Can you do another comprehensive review of the new Mi band 8?
Other reviewers just read the brochure. THIS is actually a true review. Your efforts are really appreciated.
i agree
I'm mind blown by the amount of effort you put in these reviews
Hands down the best smartwatch/fitness tracker reviews on RUclips, looking at what _really_ matters.
He has lots of free time
@@koningklootzak7788 I'm not so sure considering he has a full-time job as a postdoc researcher
@@cubiq1 sure if he doesn't have much work to do
Even when he's sleeping
this is how youtube gadget reviews should be, not only mentioning the specs but also testing it thoroughly on daily activities
I see Xiaomi just released the Band 7 Pro a few weeks ago and also a firmware update today that they say adds some features and improves others including heartrate, blood oxygen and sleep tracking. Would really like to see you do a full "Scientific Review" of this Band/Smartwatch in the future if you can. Thx for all your hard work!
yes +1 to this, xiaomi do regulary update of mi band firmware, and sometimes its related to mi band sensors accuracy
I think need to wait few months more
I bought it straight away only to discover that it doesn't have the PAI activated. Something I liked on all the mi bands i've had. I returned it. I guess in the future they'll activate it🤔
Yes, this. Please do the review of the Band 7 Pro.
@@steveneustace2331 I have Pai activated on my mi band 5. As you have used miband7 a bit, should I upgrade to it
Thank you so much for this review! Made me go for this product, and I keep coming back to your video. I needed a device that's small on the wrist and tracks fitness data with reasonable precision and can help me gauge my sleep stats (primarily deep sleep) so I can understand how to sleep better. The fact alone that this records steps, distance, heart rate, and deep sleep accurately enough for a layman (coupled with my phone, it also tracks my exercise routes super accurately) is perfect for me in and of itself and this device has so much more to offer in terms of notifications when you reach your steps goal for the day. It tells you when you've been sitting for too long, has guided breathing exercises with vibrations on your wrist to help you calm you down, etc. I also have vibration alarms that remind me to go to sleep at a regular time and help me get up in the morning (without bothering my girlfriend!). Most importantly, this device is discreet and helps me gamify my daily exercise, making me walk more and and make an effort to stress less, and it generally gets me stoked to take better care of myself. I like wearing a classic wrist watch as my main watch, and I can just put this on the opposite wrist and turn off the screen. It's light and sleek enough that I don't even notice it's there. Also, the screen is awesome. Highly recommended!
I have never trusted anyone as much as I trust Rob and I have trust issues.
science my friend, the science... :)
Ye ok
@Labellevie :D
Some of the most effective serial killers had those abilities/skills also.
your trust issues is too low, trusting some stranger who's a youtuber
This is GOLD! Thank you for all the hard work done in all your evaluations. Looking forward to an in depth review of the Mi band 7 Pro.
This review is absolutely ridiculous and incredible in equal measures. This truly is an amazing and in depth review. With a level of detail and accuracy that I have never seen anyone produce on youtube before. Instant sub and notification bell click.
Thorough coverage. I have been using an Amazefit Bip for several years and was a bit disappointed to how poor it compared to other similar devices. So this review made it clear that I should consider replacing it. So I will subscribe and make up my mind on the basis of you reviews and my specific needs. One note, I don’t want something like the Apple Watch that requires daily charging. I really like the Amazefit I have because it goes for weeks. Thanks
Hi Rob, if you want to know what the stress calculation might be search for 'baevsky stress index'. The info page in the stress widget clearly says that the calculation / measurment is HRV based. The baevsky stress index was developed in the 60's for astronaut health tracking.
I have had the Mi-Band 7 for a week and finding it awesome given its price point. Your research helps people understand the watches better. Thank You.
I really love your video's. The quality between your reviews and others are huge! Thanks so much for all the work❤
I wish a review like this existed for every product
Even vibrators? 🤣
Love your content. your videos helped me choose a device with much higher confidence. Here's an idea to quantify the accuracy of the GPS data. Export your GPS data on the map as a png (Screen clipping should work), then with a digitizer tool such as webplotdigitizer, get the x and y coordinates of the tracks with a predefined spacing. For the reference, use a predefined route, drawn on the map or imported, then export the coordinates with the same spacing values for both x and y. The difference between two data sets should be straight forward from there. Admittedly, this approach doesn't include the time variable of the acquired locations for the track. But probably, that does not matter much as long as one data point at a stationary location can be confirmed that was acquired within a reasonable time frame. Let me know what you think if you read this comment.
I've discovered your channel on last weekend and immediately got addicted to your videos, I love this kind of analysis. Thanks for yout amazing work!
highly undervalued channel. Never have I seen such organized and scientific review for just an random cheap smart watch. Thank you for all your Effort. Continue and I know your gonna grow till half a million at least!
I actually tested the mi band 7 against my polar h10 it was only off by 5 points or so for the HRM. Not bad tbh. It's a good fitness tracker I'd highly recommend it.
What activity did you test it with?
Thanks for making such great reviews!
Just found out about this channel and I’m stunned! I wanted a review on the miband but other than that I love statistics and statistical analysis! Great content, keep up the good work
great video! I'm looking forward to the promised full review, to see if they've corrected the inaccuracies via the update - as well as a scientific review of the MiBand Pro.
Hi Rob. Just a question. Does it make sense to wait for the final Mi Band 7 review that you announced months ago? Appreciating all your work and efforts.
Yep, I’m buying this one. God bless you for the great efford you put into these reviews. Looking forward to see your videos in future 🙂
I was waiting for this video . Thank you!
Glad I found your channel!! The effort involved in the video is insane!!! Subbed!
I have the MI band 5, and love it. I really like the sleep data, like resting heart rate. I love the PAI data also!!
You seem to love watches (and science) - I think a fun project could be reviewing scales like those from xiaomi. There are part of the self-tracking ecosystem and have so many datapoints to look into. Cheers for all your reviews so far 👍
I was waiting for this vídeo. Thanks! ✨
Thanks a lot Rob for this promising outlook. Eagerly waiting for the final report. Also a question if you don't mind: is the xiaumi s1 watch (active) on your radar?
Great video as always! Looking forward for mi band 7 pro scientific review next! 😄
Very detailed. Very interesting. One intractable problem I have experienced since the mi band 5 is that whenever I swim it counts steps! If I swim for one hour it will track the swim quite accurately but also will count about 5,000 steps.
I also get steps when driving :)
@@dynboots
That’s cheating 😂
Hey, loved the scientific approach. Would you be interested in doing the same research for Xiaomi Mi Body Composition Scale 2 tracking accuracy? Or are you narrowing the focus to only watches?
Thanks for the review. Do you have any webpage with comparisons and overview of different products?
I got this thanks to your review, it's already had some new updates which is good:) the Spo2 seems very accurate. it also can be left on all day which suits me well. thanks again
Really like the look of this new watch. The screen size is spot on.
Came across your video while contemplating whether to buy this device - thanks for the effort and for providing such unique insight into how these devices perform for people with different tracking needs!
this is amazing! very informational, thank you very much for this video! Subscribed!
Thanks so much for your detailed and metric based reviews! After watching your review, I decided to buy this as my first activity tracker. I owned the vivosmart 3 for a few days before returning it, does that count?
Anyway, I see that the watch has an option to enable "detailed sleep tracking" requiring extra power. When testing, did you have this option enabled? Did the option even exist in the firmware at the time you tested?
Rob, you are my favourite smart watch/activity tracker reviewer. Very friendly and clear explanation. 4 thumbs up 👍👍👍👍
I was so impressed with this review I subscribed. Outstanding job!
Hi! Thank you for the scientific review! I appreciate it sooo much! I had to let you know that the Mi Band 8 is out, but in CN Version for now. Global Version are rumoured to be released by end of 2023 but we'll wait and see. I'll be waiting for your review on that before getting one. Thank you for all this amazing efforts for the reviews 😊✨️👍🏼
Dude, this is what i have searching for a lot of time, every video who i see is about comparatives of the apple smartwatch, but no one is with medical things, you have won a sub! :)
Wow all efforts testing different watch with actual scientific devices is a THUMBS up. Thankyou so much
I really appreciate the quality of the review. The results of the heart rate tracking during exercize is worse than I expected. I guess I'll have keep my apple watch 6
there are 2 things I like about mi band over huawei band 6: higher screen dpi, stronger vibrator and better compatible with iphone (music control and some small stubs)
Assisti com legenda em português gerada automaticamente pelo RUclips, deu pra compreender muita coisa, excelente análise. Infelizmente não tem vídeos em português com análise tão completas como esse... 🇧🇷
Sempre assisto, esse cara é o melhor
Pra você ver o quanto você perde por não saber inglês
O melhor canal nesse quesito ❤
Saber inglês é bom demais.
Thank you for another great video! I'm doing the rounds on your videos trying to find a fitness tracker thats best for my needs since it is my first time buying one. You're certainaly giving me lots of great data to use!
Does the mi band 7 allow the use of its timer app while monitoring workout eg Freestyle training or Indoor fitness at the same time? Great video!
Amazing video, love it!!
Loved the channel, you really take it serious
Gonna wait for part 2
the review is very helpful!! I hope you do a review on mi band 8 next!
Thank you for your vidz. Your visuals are great, speech is well paced and easy to understand.
You helped me to decide and buy the band, I know it's not perfect or the most accurate but for the price and my goals, it's good enough, thank for your input, cheers from Ecuador!
Hi ROB !!! Could you please post the result of scientific tests after updates that have been sent for the recent firmware updates .
Also, pls indicate clearly as to where its standing in the graph from worst to best smart bands.
Excellent review! With this video, all my doubts of these smartbands has been scientifically answered. Thank you Sir!!!
the amount of work you've put in the video.. respect man!
That's how a review should be made. Awesome content!
I'm solely interested in a band/watch for usage with Sleep As Android - is there any difference in how well it is integrated with different models?
Which one works best/most precise?
Hey there and admiration for your efforts! From all budget smart bands/watches, do you think that one has the best sleep tracking? Which one you will recommend for sleep tracking (from the budget ones)?
Your Signal-to-noise ratio is excellent, many thanks.
I have a question. I have been using my Apple watch 5 for a long time, and I just bought this new MI 7. One thing that I cannot figure out is : When I walk on the treadmill the MI 7 doesn’t count the distance without me swinging my arm ? Both my Iwatch and my Zeblaze Startos can do that. I have tried different modes ( indoor walk, treadmill ) but I don’t get a count that’s anywhere near correct? Do you know why that is ? Thanks for a good review 😃😃😃
I was waiting for your this video. Thank you.
I have same issues with heart rate tracking. I do low impact cardio, elliptical and rowing. It's very good at updating regularly during rowing. But with the elliptical, it just doesn't update often enough half the time.
Very thorough and helpful. Thanks!
What would you advise between thé mi Band 7 and the Huawei Band 7?
First time here and I've liked your video literally 1 minute in 👌 Great job man, Amazing & thank you 👏🙌
Do you think using an elastic band instead of the stock rubber band would help getting more precise readings?
Finally a review with acual information that is helpful. Normaly reviewers just read the specs
Useful as always! Thank you. Please review the new mi watch s1 soon. Can't wait to know if it's any better in accuracy
Great review as always 👍. When can we expect a review of Huawei Watch Fit 2 ? 😁
Estaba esperando este video, muchas gracias
Hi Rob, Excellent video! What is the next werable to test?
Thanks for the review. Could you please include to the next video a heart rate measurement accuracy after running?
You are one the best gadget reviewer I have ever seen in you tube. Very convincing with lots of measurement data.
based on budget, and the accuracy of the other sensors, for swimming, what "cheap" watch with gps would you recommend to use in combination with the polar h10?
Amazing videos, especially with the amount of scientific analysis you do on different products to let the consumer what's the best wearable for them. :D
If you don't mind, could you do an analysis of Pebble Cosmos Luxe SmartWatch? Thank you :)
The Mi Band 7 Pro was just announced the other day...please test when available.
This is the only review i want to watch. Thanks! amazing
Thanks. Which is the best sleep tracker you would recommend?
This or a Huawei Band 7 if you could only pick one with blended use of fitness tracking, sleep tracking, and steps?
Thanks Rob!
Any plans for importing and reviewing the Huawei Watch D? I bet you are definitely interested!
I just stumbled upon your channel and I'm mindblown by the effort and precision of your reviews! I have a request for more Garmin devices to be reviewed, like the cheststraps and Garmin 735xt, I have the watch and I'm considering getting the hr strap for health reasons, I hope you can make it happen! You have a new subscriber
Is it still planned to bring an follow up review for the Smart Band 7? I would love to see if something changed😮👍🏼👍🏼👍🏼👍🏼
Hi Rob. I have a question. Now that we have a fairly accurate oxygen measurement that works 24/7 even during sleep. Could we potentially use that to detect sleep apnea?
.
I found my answer. Rob actually did make a video about using wearables to detect sleep apnea. Just look for it in his channel. Good work Rob
Love this channel! Would be great to see if the firmware updates fixed some of the issues. Especially interested if the sleep tracking and outside heartrate improved.
The firmware updates usually only indicate 'fixed bugs' - so that doesn't tell you anything.
Probably a lot of work, so can understand if for such a cheap device it is not worth the effort. Subscribed!
Good review, as always. I would like to see your take on PAI health points system one day. It's on this and other xiaomi bands.
Extraordinary analysis. Many thanks.
Thank you Rob. If possible, could you do a review of the sleep tracking for Garmin Fenix 7 watches after their latest update please?
Anyways great work!
Many thanks for your very interesting review.
Just a question please, in the menu of the smart band we can set an alarm when the oxygen level reach 90% (or 85 OR 80) which seems very very low.
My question is the following:
Why Xiaomi allows to set an alert starting to 90% (not above) while it is commonly admitted that below 94% you're in a real danger?
Thank you.
I have to ask too. I bought this bracelet because I read that it has a reading consecutive Blood oxygen test. which checks all the time and gives a warning that the number is too low.
So I have some problems with mi band 7
1. It's not really a continuous checker. It checks from time to time. I didn't understand how it was absolute. Sometimes it's 3 times an hour and sometimes only every few hours check
.2. Why did they set us 3 percentage levels below which a warning comes? Why not let us pick a number? For example below 92
Problem number 3 is the alert. It doesn't really work. I don't get a notification and I see in the application that there were low indicators
.Are there other bracelets/watches that can measure oxygen in the blood. Continuously and give an alert ?
Great review, very useful. Thank you.
Another great video! Do you have any plans to test the new Garmin Forerunner 255? Your Garmin videos seem to do well with views, and this device generated a lot of excitement because it includes a lot of the higher-end functions for $350 (plus the inclusion of the S model for smaller wrists). Thank you for your dedication to this channel :)
Between mi band 7 and huawei band 7, which one do you recommend more?
Hey,
a Video about the accuracy of the Apple Watch’s(6/7) rest HR and walking HR, for instance compared to Oura or other wearables would be very helpful!
I wish there were some quantitative way to compare the vibration strength between watches. Waking up from the alarm is a feature I use a lot and I know others do also. Some watches and bands have stronger vibration - others can barely be felt. Something like strapping the watch to a dowel then attaching a phone and using an app that displays the accelerometer value should be able to measure the vibration.
Is there really an option to strengthen the vibrations? Really weak and short
I don't know when mi band 7 full review will come, but waiting for it, to see how the band is improved. Already got 3 updates, probably will get couple more. Hope it will be better and bang for the 💰🤑
Thank you man. Really very detailed and trustful review. Waiting for mi band 7 pro. And best sleep tracker
Very interesting review, thank you! Is there anyway of knowing how accurate is the calorie count? I'm very curious to know if the amount the band says is the actual number of calories I'm burning haha
I woud like to express Gratitude for u to making this review.
when will you go to drop the Huawei watch fit 2 full test video?
and I like some little improvements to this video keep it up.🙂
Hi Rob, I really like how you rate with stars for features. It's easy for viewers
As an average user. I find this band to be exceptionally well. Been using my mi band 4 since launched. Thinking of upgrading to 7 anytime soon
Have you?
have you?