Main Chip : Nordic nRF51822
Heart rate sensor : PD70-01C-TR7
Screen size : 0.95
Screen type : OLED
Data connect : Bluetooth 4.0
Compatible system : Above Android 4.4;Above iOS 8.0
Waterproof : IPX8
Battery capacity : 100mAh
Standby : 3~5 days
Vibrate : Real vibrate reminder
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