I have bought this "mi band 3"in about 4 months ago.i was really satisfyied seeing this product.
It has heart beat sensor at the bottom to check the blood preasure.
This watch also gives us alerts when we sit continously for an hour.
The watch new and cool features like stopwatch. You can enable silent mode on your mobile by tapping on this watch.
Its has a new feature "factory reset"helps to reset your watch and allows you to sign in again from another account.
This watch tells us the estimated time we slept, deep sleep, awake and many more features.
You can also find your mobile phone by longpressing on the mi band .
You can change your font style without any use of mobile.
It indicates your total steps in a day ( 24 hrs) , calories burnt, distance you have walked.
It helps to store your push-ups and it has 2 options for health purpose. i.e. treadmill and exersise.
It shows you the weather around your location and also shows tommorow's Weather.
It vibrates when you recieve messages and calls to your mobile.
It takes 2 hrs to charge fully and gives us the total battery life of 2weeks i.e. 14 days.
TRUST ME! ITS WORTH.