M4 Waterproof IP67 Smart Watch Wristband Bracelet with Sport Fitness Tracker, Heart Rate Monitor - Black Smart Devices 1 x copper heatsink)

1 x copper heatsink)

Missed Call Bluetooth Version Bluetooth V4

Can directly connects kinds of SCM for use

Unit Fast Charging Function No LCD Screen Yes Auto Circuit Detection Yes Over Voltage Protection Yes Short-Circuit Protection Yes Over-Charging Protection Yes Over-Discharging Protection Yes Packing List 1 x Battery charger

4 * Button

M4 Waterproof IP67 Smart Watch Wristband Bracelet with Sport Fitness Tracker, Heart Rate Monitor - Black Smart Devices 1 x copper heatsink)Device Model: intelligent heart rate bracelet Compatible system: Android 4. 4 and above and iOS 8. 4 and above Main functions: real time heart rate measurement, pedometer, calorie burning, distance, sleep monitoring, call reminder, alarm reminder, information push, flip bright screen (WeChat, blood pressure function) Vibration: real time vibration reminder (non Bluetooth connection status) Waterproof and dustproof: IP67 waterproof, bathing swimming