1. Product weight: 1.1 oz(exclude packaging), 4.1 oz(include packaging); product size:50*24*11mm; packaging size: 90*80*60mm. 2. 100 mAh lithium rechargeable battery, 3-5 days normal use, 20 days standby. 3. This bracelet can be used as a bluetooth headset when taken off from the band. It's really useful when you are driving, riding,or having sports. 4. Time,date,week display;battery power indication;steps,distance and calorie tracking; alarm setting. 5. Sleeping hours recorded will be cleared automatically at 4:00pm every day. Other data recorded will be cleared automatically after 12:00am every day. 6. How to test heart rate? Get to the heart rate interface, then press the power button for 2 seconds, it will test your heart rate. 7. It's USB rechargeable.You can charge it via an USB cable easily. 8. Shake your wrist to light up the screen to check time, date and battery power. 9. One and half year warranty. P.S. Please note this smart bracelet doesn't come with App. The heart rate monitor is for casual use only- not for medical use and extreme athletes.
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