Xiaomi Fitness Tracker, Mi Band 3 Heart Rate Monitor Activity Tracker Watch 50M Waterproof Smart Bracelet 0.78 OLED Display Weather Forecast Wristband Pedometer Calories Burned Sleep Monitor Black

Specifications: Length: 9.8 inches (can be adjusted length 6.1"- 8.5") Weight: 0.05Ib Battery capacity: 110mAh Function: Time display, Caller ID / Reject, Instant message display (Facebook, Instagram, Twitter etc.), Lift the wrist screen, Sedentary reminder, Vibrating alarm clock, Do not disturb mode, Automatic step counting, Unlocked, Event reminder, Sleep monitoring, Find phone, Heart rate monitoring, Weather forecast, Target setting, Heat consumption viewer, Speed reminder, Sports mileage, Browse notifications, Timer, Set display item, Low battery reminder, Swimming, Bracelet screen lock etc. More accurate step counting algorithm, daily heart rate changes. Upgrade the step number algorithm again and let your efforts count every step of the way. In addition, The heart rate sensor accurately reads 24-hour heart rate changes and detects current heart rate at any time. Sedentary reminder When you are too busy and forget the time, the band will gently vibrate, remind you to get up and walk.   Maintain a better physical condition, stay focused yet relax appropriately. 20 days Long Standby Time With 110mAh battery capacity, Mi Band 3 can last for nearly 20 days with normal usage. Also, it's only 20g weight with strap and 247mm long in total with adjustable Length:155 - 216mm. Compatibility: Mi band 3 support for Bluetooth 4.0 and above, Android 4.4 and above, and iOS 9.0 and above, including most smart phones in marketing. Packages 1x Mi band 3 1x Charging Cable 1x User Manual