Attention: This tracker requires iOS 8.0 & Android 4.4 and above, Bluetooth 4.0 (Smartphone only, not for PC, iPad or Tablet). Please put off the wristband, when you want to charge it up. Main Features: 1.Track real-time heart rate automatically and continuously 2.Automatically monitors your sleep duration and quality 3.Tracks your steps, calories and distance walked 4.Call Alert and Incoming Call ID ShowsSMS Alert 5.Reminders to move 6.Remote Camera Shooting 7.Wrist Sensor. Automatically light up the screen when you turn your wrist towards you 8.Alarm Alert: Set silent alarms on the tracker to wake you up without disturbing your family 9.Two display methods. Cross screen and Vertical screen Specifications Bluetooth Version: 4.0 Bluetooth Connection Range: 10 meters(32.8 ft) Charging Time: 1-2 hours Working Time: About 5-7 days Stand-by Time: Up to 15 days Product Weight: 10g Band Material: TPE Strap Size: 240 x 16 x 10 mm Charging Port: USB charge Working Voltage: 3.6~4.2 V Compatible System: iOS 8.0 & Android 4.4 above Screen Size: 0.86" OLED screen Battery Capacity: 50mAh Battery Type: Lithium Polymer Battery Package Contents: 1 x Astonlink Smart Bracelet 1 x Charging line 1 x User Manual
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