Specifications:Equipment model: M2S heart rate smart bracelet. Compatible system: Support Android 4.4 or above, IOS7.1 or above. Sensor: Gsensor kx022-1020. Chipset: Nordic nRF51822. Heart rate sensor: Silicon labs Si1142. Vibration: Yes. waterproof dustproof: IP67. Screen size: 0.49inch. Screen type: OLED. Bluetooth: 4.0 BLE(low power consumption). Material: front shell, Back shell: Plastic, wristband: silicone. Product size: mainframe: 42x20.2x12.3mm, Wristband range: 155mm-210mm. Net weight: about 25g. Screen display: blue. wristband: black-white, grey-white, blue-white, orange-white, yellow-white. Button: one button. Control mode: Button control/Gesture control. Data Storage: 7 days. Battery type: Lithium-ion battery. Battery Capacity: 60 mAh. Battery life: 5-10 days. Charging method: 3 point contact charging. Charging time: 1-1.5 hours.Package List:1 × Smart Bracelet.1 × Charging Clip. 1 × English Manual.NOTE1. For the heart rate is a real-time data, you need keep your smartphone connect with your bracelet to monitor your sleep, and the sleeping data may not record if you had a short time rest; 2. If your smart phone disconnect with you bracelet, you can try to deleted the bracelet in the APP and deleted the connection in your smartphone's bluetooth setting, and try to connect your phone and the bracelet again; 3. It mainly record steps by moving hands and arms, and it can't record other sports data, such as weightlifting, the calorie data is not correct.
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