0.42inch OLED display screen with touchpad
Support Heart rate monito
Gesture Wake up Screen
Passometer,Fitness Tracker,Sleep Tracker,Message Reminder,Call Reminder
Water resistant (IP67)
20-day standby power
Sleep-cycle smart alarm
With a Dialog II 4.0 bluetooth chip, ADI sensor
Running MIUI Android 4.4 and above versions; For iphone 4s/5/5s/6/plus ios 7.0 and above
Unlock your Mi phone without a password
Stylish band options (incl. wrap-around and leather)