Xiaomi Band 4 Global Version, Smart Colour Display, Heart Rate, Gym, Music, Bluetooth 5.0, Waterproof up to 50 m, Pedometer and Messaging Notifications, Black

Mi Band 4. Been using this for a week or so, issues todate are that it'll switch itself on during the night hence breaking sleep with a bright light. The heart rate monitor does not work correctly, today I did some strenuous exercise and the heart rate monitor was showing anything from 50 beats per minute to 125 and anything else in between, it was not consistent in its recording which is not what you want with an heart rate monitor. Let's hope that the above and a few other niggling issues can be sorted out in software updates. As for the strap I find this to be a very cheap design so not wholly satisfactory, it can be fiddly to get it to fit comfortably onto the wrist and also to extricate the device from the strap for charging and then to put back in. My score of three would change to 4 if the issue with the heart rate monitor and involuntary switching on of the device were dealt with. UPDATE. It's been over a year since I purchased this item and all I will say is that it makes a pretty good or round watch but there's a fitness tracker forget it, heart rate monitor is unreliable and for the life of me I cannot get it to sync correctly with the app. After getting many incorrect readings I have given up with a sleep monitor. On the plus side the face is bright, it tells the time ok, battery life is excellent, and I can get a full charge from empty within an hour. I will give it 4 out of 10, hopefully they will have done a lot better with the band 5 but I'm wary of buying one because of this experience I've had!

I am OBSESSED with this watch. I had the generation 2 + 3 bands in the past, and I lost my generation 3 so decided to treat myself to this one as a replacement, and I'm so glad I did! I don't really use the sports features because I'm disabled so I can't get much exercise, but I think the steps seem to be quite accurate. I love being able to use the timer and stopwatch on it, the music controls and the notifications, being able to quickly read messages without opening my phone is so convenient. I never miss phone calls with this watch either because it vibrates to let me know my phone is ringing. the display is the clearest and brightest yet, I love the full colour display and the new options for backgrounds, I have a really nice rainbow background on mine. the best thing though is the battery life - it takes less than 2 hours to charge, and then lasts for about 3 WEEKS!!! just amazing, you will not find a better watch for the price. the accompanying app is great, and if you don't like it there are others available you can use with it. I think everyone should have one of these!!

The price of the miband 4 for what what is capable of is simply amazing. The reason I rated with 4 stars the app battery life and accuracy is because I am nit-picking. I expected the battery to last longer than 2 weeks but it barely reaches 10 days however I have all the notifications coming to my watch with vibration which is great as I always have my phone on silent therefore I never miss a call anymore. The app is very good but there is much room to improve on it, however 3rd party apps allow you to greatly enhance the experience and customization. The accuracy is ok I guess it's on par with much more expensive trackers but it simply a step counter rather than a more wholesome system. The heartbeat monitor is good but sometimes it can have wild swings so either I have heart arrythmia or the monitor is playing games on me. +- 10bpm on rest in the same minute but it is generally correct especially when you actually tell it to measure your heartbeat. All in all I have no regrets purchasing this wonderful watch as Xiaomi is proving to becoming a true technology front-runner in the value for money sector

It's hard to tell the accuracy of this, but I can compare it with a cheaper version (bought here) which cost half the price, and I feel the Xaomi Band 4 is more conservative in its counting. I always felt that the cheap band was over-counting steps, which is good for the ego but not really helpful.This band, I feel, is more accurate, so when I do achieve my 10k steps, I feel that I have properly achieved something.The supplied band is very comfortable on my wrist, and the screen is easy to read. I really like the fact that there are thousands of watch faces out on the web, so I can replace it with something different every day if I fancy.Battery life is phenomenal - 10 days+ on a quick charge seems to be achievable.The mobile app is ok, I really just use it to check my sleep, and I have connected it to Google fit so I can forward steps to Virgin App.Definitely recommended.

Generally I'm happy with it.Well, it's obviously not going to have all the features that one five times the price will have but it does everything I bought it for.One outstanding feature is battery life. After a month of use, it was only down to 15%. Looks like 10 or 11 charges a year then.The step counter seems reasonably accurate and it produces similar distances walked whether I use the tracking mode or not.One one thing that isn't accurate is sleep tracking. It can't seem to tell the difference between being in bed but awake and light sleep but I didn't buy it for that.For the price, it seems hard to beat.

Mi Band 4 is a great fitness band and almost a smart watch. There are a few pros and cons but at this price point, it's a great product.Pros--------Battery life is superb it goes on and on and on. After 5 days of use its still 70%,left!!!-AMOLED display is a major upgrade over MI Band 3 and looks amazing.-Almost a complete smart watch which can show steps, distance, calories heart rate etc without the need of an app.-Alarm functionality / vibration is highly effective in waking me up.-Lots of strap options over Amazon and other sites Cons---------The step count is somewhat inaccurate and doesn't match with my iphone or apple watch-The charging requires talking out the unit from strap which is a bit fidly procedure.