Fitness Tracker, Bluetooth Enabled, Accelerometer, Gyroscope, GPS, Text and other msg notifications, V02 Max,

Heart Rate Monitor - ability to connect external heart rate devices like chest strap

Amazfit App - Workout Assistant (ZEPP) to connect to phone

Hundreds of custom watch faces available

Both Apple & Android compatible 

Upgraded my watch and no longer need. Used for trekking in Nepal and worked great!