I bought the amazfit stratos from gearbest for ₹14k 2 months before and I just fell in love with the watch. The previous two months it worked flawlessly until yesterday.
PROS:
1) premium features in a budget price.
2) heart rate sensor.
3) it is health centered and is pretty accurate.
4) it has awesome daylight visibility.
CONS:
1) No android OS.
2) unable to change watchfaces or download apps.
3) despite the above cons I was still happy with it until its software got updated a week before. AFTER THE SOFTWARE UPDATE, ITS BATTERY DRAINS LIKE WATER AND IT FAILS TO GIVE ME EVEN 4 HOURS OF USAGE ON A SINGLE CHARGE which is a shame.
Also THE UPDATE CAME WITH A LOT OF BUGS DUE TO WHICH THE INTERFACE LAGS WHILE USING.
Huami please fix it