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Hardware Configuration: antenna:Lead antennaCPU:RETEK8762cBluetooth:5.0.RAM/ROM:128KB/128MBcharging method:Magnetic attractionLCD specification:1.09 inchResolution:240*240Touch screen specifications:Full touchbattery capacity:140 mAhTheoretical standby time:15 dayTheoretical working time:7 daymotor:Built-in, vibration reminderHeart rate:V-CARE VC31battery voltage:Rated voltage 3.7VCharger specifications:DC 5V （Current ≥0.5A）Support versio:iOS 8.0 above,Android 4.0 aboveFunction:Step, exercise distance, calories burned, heart...