Feature
1. 1.74-inch AMOLED Narrow-edge quadrilateral display: Featuring the industry-leading AMOLED screen with vacuum filling sealing technology, the narrow edges are reduced to 2.2mm, dramatically improving the screen-to-body ratio for an exceptional visual experience.
2. 2.5D cover glass. An unmatched tactile experience: The 2.5D cover glass display feels smooth under your hand and boasts protection against wet hands, reducing accidental touches caused by sweat or rain.
3. Aluminum alloy frame: The aluminum alloy frame enhanced with advanced sandblasting techniques for a smooth and exquisite finish. Equipped with a quick-release mechanism, it can be paired with straps made from various materials to match your outfits.
4. Dual LED, dual PD. Accurate testing: The superior configuration can transmit and collect more signals for more accurate motion tracking and health monitoring. Comprehensive algorithm updates provide precise and professional results, both internally and externally.
5. Advanced sleep tracking, More precise and more intuitive: Wearing the band on your wrist while you sleep enables accurate identification of sleep stages, records, and monitors sleep schedule. It also provides a multi-dimensional analysis of your sleep behavior, allowing for a vivid and intuitive understanding of your sleep habits. Based on your sleeping habits, you will be paired with a sleep animal to help you visualise your sleep patterns. So you can further improve your sleep quality.
6. Upgraded AFE chip: More accurate measurement of heart rate and blood oxygen levels.
7. 150+ sports modes, Professional sports algorithm: Supports 15 professional sports modes with automatic recognition of 6 modes. The advanced algorithm monitors your movement wherever you are, providing comprehensive and accurate data for a scientific and professional analysis of your workouts.
8. 5ATM water resistance: Supports a wide range of water sports and recognition of swimming posture.
9. 21-day long battery life: Equipped with a larger battery and new low-power chip delivering up to 21 days of battery life, a 50% improvement over the previous product, for longer-lasting companionship.

Specification
1. Weight: about 24.5g (without wrist strap)
2. Size: 43.27x32.49x10.8mm
3. Screen size and type: 1.74-inch AMOLED color square screen
4. Screen resolution: 336x480, supports full-screen touch operation
5. Screen brightness: 1200nit, supports automatic brightness adjustment
6. Cover material: 2.5D tempered glass cover
7. Shell material: aluminum alloy middle frame + fiber high-strength polymer
8. Sensor: acceleration sensor, gyroscope sensor, optical heart rate and blood oxygen sensor, ambient light sensor
9. Waterproof level: 5ATM
10. Data connection: supports GNSS, Bluetooth 5.4, Supports BeiDou, GPS, GLONASS, Galileo and QZSS satellite systems
11. Vibration motor: linear motor
12. Battery capacity: 350mAh
13. Charging time: about 75min
14. Adjustable wristband length: 135-205mm, material: TPU
15. System language: English, Polish, Traditional Chinese, Turkish, German, Ukrainian, Swedish, Thai, Italian, Romanian, Finnish, Vietnamese, French, Czech, Norwegian, Spanish, Danish, Dutch, Russian, Japanese, Portuguese, Arabic, Korean, Nederlands, Greek, Hebrew, Indonesia, Simplified Chinese
16. Supported systems: Android 8.0 or iOS 12.0 and above
17. Supporting APP: Xiaomi Sports Health

Functions
1. Health: supports daily activity recording, heart rate monitoring, blood oxygen monitoring, sleep monitoring, stress monitoring, female menstrual cycle reminder, breathing training
2. Sports: supports 150+ sports modes, running courses
3. Gadgets: supports music control, alarm clock, timer, stopwatch, flashlight, weather, events(Only Xiaomi/Redmi mobile support) , tasks, find phone, world clock, focus, camera