Look at those specs for $120!
http://www.androidauthority.com/xiaomi-amazfit-713355/
I wonder how long will Garmin be able to charge $450 for the top-of-the-line Forerunners with all the stability issues ...
I saw a graphic that Xiaomi were 2nd behind Fitbit and ahead of Apple & Garmin in fitness device sales but had not really heard of them!