Heart Rate Monitor Activity Trackers,Amytech Bluetooth 4.0 Step Pedometer Calorie Counter Distance Track Sleep Monitor Call and Alarm Remind Anti-lost Activity Trackers for Android IOS Smartphone

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Heart Rate Monitor Activity Trackers,Amytech Bluetooth 4.0 Step Pedometer Calorie Counter Distance Track Sleep Monitor Call and Alarm Remind Anti-lost Activity Trackers for Android IOS Smartphone Specification: Connect: Bluetooth 4.0 Screen: 0.49" OLED APP OS : IOS 7.1 & Above, Android 4.4 & Above Sensor: Gsensor kx022-1020 Heart Rate Sensor: Silicon labs Si1142 CPU Chip: Nordic nRF51822 Vibration: support Waterproof: Life Waterproof ( Sweat proof, rain proof,water drop proof, Can't suitable for diving and Swimming) Material: Host-Plastic Straps TPE Size:Host- 40.9*20*12.5 mm Strap: 260*21*12.5 mm Net Weight: 20g Color: Black ,Purple,Blue and Orange Other function: Wrist senses, tap to switch Data Storage: 7 days Battery: 70mAh Li-polymer Battery Input voltage: 5V Working time: 5-7 days Standby time: 7-15 days Charging: 2 points connect charge Charge time: About 1.5 hours Package: 1 pc bracelet 1 charging cable 1 user manual