Compatibility: requires Android 4.4 or above, iOS 7.0 or above,Bluetooth 4.0 or above. download APP “Zeroner” from Apple Store or Google Play.
OLED Display: 0.91 inch OLED screen allow you to check time, date, steps, calories, working distance, message, caller ID freely
Multi Functions: tracks steps, walking distance, calories burnt, sleep quality. Also can be set alarm to remind of getting up, drinking or sedentariness