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smart functiontrack your daily steps, distance and calories, helping you do exercise scientifically and reach your goals; continuous, automatic, wrist-based heart rate tracking, get to know your heart rate at any time and get a better understanding of your fitness level
sleep tracking automatically track how well you sleep at night, get the data about your sleep trends through the night in the app.the silent vibration alarm clock can wake you up without disturbing others.

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1.59in l x 1.59in w x 0.49in h. You can also get call, text and app notifications, use amazon Alexa built-in and control Spotify, freezer and Pandora when your phone is nearby.
Compatibility: Apple iOS 12.2 or higher, Android OS 7.0 or higher, Syncing range: Up to 30ft, Music control via Bluetooth Classic on Android and Bluetooth LE on iOS devices.

Small stylish smartwatch complements your look with a unique decorative lens that reveals a bright touchscreen display with a tap
Battery life: up to 5 days
Understand your body by monitoring your respiration, Pulse Ox (this is not a medical device), energy levels, menstrual cycle, pregnancy, hydration, all-day stress, sleep (when paired to a compatible smartphone) and estimated heart rate

Features always-on customizable color display and 1+ year battery life; no charging necessary
Tracks steps, distance and calories burned, monitors sleep and provides a personalized daily step goal (heart rate monitoring not available on this product)
Safe for swimming and showering. Display size – 0.43″x0.43″(11×11 mm)

Xiaomi Mi Band 5, Bigger Dynamic Color Screen: The Screen Of Mi Band 5 Is Increased By 20%, 1.1″ Amoled Screen . 100+ Watchfaces
More Convenient Magnetic Charging: The Charging Interface Has Been Changed To The Below Of Heart Rate Sensor, And Two Contact Points Design, Just Charge At A Touch, No More Frequent Disassembling The Mi Dial
Upgraded Professional Sensor: An Upgraded Version Of The Chip, More Accurate Health Monitoring

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Xiaomi is One Step Ahead: #1 Wearable brand in the world. New Mi Band 7 is another big step forward. Xiaomi’s only designated official authentic store: 【Xiaomi US】
1.62” AMOLED Display: The magnificent large 1.62” AMOLED display(25% more visible area than Xiaomi Smart Band 6) debuts on your wrist, making it easy for you to read and control. Everything is presented in detail at high resolution. Even better, thanks to always-on mode, you can read date and time without lifting your wrist or using your fingers.