NOTICE: 1. Please only use the app that we provided on your mobile, it may not support other apps. 2. The heart rate data is just for your reference, with a margin of error of 5-8%. For Medical use, please order other professional medical devices. 3. In order to reduce the error, please wear on your wrist with a finger distance from ulna, close to your skin, so that the heart rate sensor can detect the data more accurate. Specifications: Material：TPU Waterproof Level：3ATM Size：230mm X 20mm Language：English and Chinese Gravity Sensor：3D Sensor Charging Time：1-2 hours Battery：150mAh Heart Rate：PPG, support heart rate test when having rest or sleeping./But Heart rate function will use much power. So when you sleep at night, you'd better turn off the heart rate function. You can test it, when you rest. Standby Time :if turn off bluetooth and heart rate, standby 2-3 days,/if turn on bluetooth and heart rate test, the battery just can use about 2-3 hours./Please use wall charger to charge it, not on computer./When you charge it, please clip the charger in right place. Function：call reminder, health monitoring, social entertainment, pedometer, intelligent alerts, information push, motion tracking, sleep analysis call reminder heart rate monitor etc . Charging：DC 5V System Requirements:Android 4.3, IOS7.0 more, Bluetooth 4.0
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