Dimensions: Without protrusions: 42.83 × 32.16 × 9.7 mm
Wrist size: 135 - 205 mm
Weight: 21.6 g (without strap)
Materials:

• Frame material: High-strength aluminum
• Strap material: TPU
• Cover material: 2.5D curved glass

Display:

• Resolution: 480 × 336 pixels
• Brightness: Up to 2000 nits peak brightness, 1500 nits HBM
• Refresh rate: 60 Hz

Water resistance: 5ATM (up to 50 meters). Not suitable for hot showers, saunas, or diving. Water resistance may decrease over time.

Battery and Charging:

• Charging type: Magnetic charging
• Battery life: Up to 21 days in low-power mode
• Capacity: 350 mAh

Sensors:

• Heart rate sensor (with blood oxygen tracking)
• Accelerometer
• Gyroscope
• Electronic compass
• Ambient light sensor

Connection and Compatibility:

• App: Mi Fitness
• Bluetooth: 5.4
• Compatibility: Android 8.0 or later, iOS 14 or later

Package Contents:

• Band body × 1
• Strap × 1
• Dedicated charging cable × 1
• User manual × 1