Please note & confirm the phone compatible version before buying.
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.
Any question with the item, please email to: email@example.com ,we will reply within 12 hours solve question within 24 hours.