1. Bluetooth version: 4.0.
2. Waterproof rating: IP66.
3. Compatible with Android 4.4 and above, iOS 8.0 and above.
4. APP Name: FlagFit.
5. Special features: sleep monitor, pedometer record, calories, miles, time, sedentary reminder, sports trends, clock.
6. Other functions: call / SMS, WeChat, QQ APP reminder, alarm clock, shake photography.
7. Display screen: 0.86-inch OLED display dialog.
8. Built-in 50mAh lithium battery.
9. Charge about 2 hours, long standby time about 20 days.