Technical specifications:

• Dimensions: 43.27 × 32.49 × 10.8 mm (without heart rate sensor)
• Gross weight: Approximately 24.5 g (weight without strap)
• Display:
• Size and type: 1.74-inch AMOLED Touch Display
• Resolution: 336 x 480 pixels
• Screen brightness: Maximum 1200 nits with automatic brightness adjustment
• Cover material: 2.5D reinforced glass
• Case material: Aluminum frame and high-strength polymer
• Sensors:
• Accelerometer
• Gyroscopic sensor
• Electronic compass
• Optical heart rate sensor and pulse oximeter
• Ambient light sensor
• Water resistance rating:
• 5ATM (50 meters depth)
• Note: Suitable for pools and shallow activities, but not for hot showers, saunas, or diving.
• Connectivity data:
• Supports GNSS, Bluetooth® 5.4
• Satellite Systems: BeiDou, GPS, GLONASS, Galileo, and QZSS
• Vibration sensor: Linear motor
• Battery:
• Capacity: 350 mAh
• Charging type: Magnetic charging
• Charging time: Approximately 75 minutes
• Compatible wrist circumference: 135–205 mm
• Strap material: TPU
• Operating system compatibility: Android 8.0 or iOS 12.0 and above
• Compatible applications: Mi Fitness app
• Included items:
• Crown × 1
• Strap × 1
• Charging cable × 1
• User manual × 1