App needed: Mi Fit
Heart rate sensor: Optical heart rate sensor
Metal surface: 100% aluminum alloy
IP67 water/dust resistant, 5.0g ultra-light body
Ultra-thin 8mm battery
Battery capacity: 41 mAh
Battery type: lithium polymer
Input current: 25 mA(TYP)
Input voltage: DC 5.0 V
Length: adjustable between 157mm and 205mm
Bracelet material: Dow Corning TPSiV


Compatibility

Requires Bluetooth® 4.0.
Compatible with Mi 4, Mi 3, Redmi Note 4G, or any device with Android 4.4 and above.
Compatible with iPhone models 4s and above that run on iOS 7.0 and above.

Note: Mi Band's phone unlocking feature requires smartphones with MIUI or Android 5.0 and above.

• US ADI sensors to detect movement and sleep quality Light-sensitive version of the real-time monitoring of heart rate, sports science
• Monitoring of heart rate Real-time monitoring and recording, scientific planning exercise
• Automatic sleep monitoring analyzes your sleep quality.
• Sync with the app to analyze your fitness and sleep activities to help you improve your lifestyle.
• Ideal gift for family and friends.

US ADI sensors to detect movement and sleep quality Light-sensitive version of the real-time monitoring of heart rate, sports scienceXiaomi