I do not understand how they can sell this so cheap. It looks good, it is comfortable and it does a good job of recording best beat, sleep, steps etc. I have my phone on silent a lot of the time so the vibrate alert and notification of who is calling me is another great function. Easy to log into my Huawei phone and check all the data. The silent alarm that vibrates is a nice touch because I do not wake up the rest of the house. The battery will never go 30 days... That is a wild claim by the manufacturer, if you disabled all the functions it might last but the whole idea is to measure heartbeat, sleep, steps etc. It does not take long to charge, I reckon 6 to 7 days is what you can expect. Amazing bit of kit for what I paid.. I bought off a different site for only £20.
Time will tell how good this is but after a week I am very happy.
Just received today, excellent delivery service and came intact. The set up through the hauwei App is a bit long-winded but once done everything works fine. Not used in the pool yet so it's waterproof capabilities are yet to be tested, though at the price I'm not too concerned if it fails. BPM is hit and miss but that is not usual on any wrist based sensor - no matter the price - a chest strap is the better option for that. All in all pleased so far and would recommend for any beginner in fitness.