Xiaomi Smart Band 9 Pro Obsidian Black Wristband Activity tracker

Technical specifications:

Dimensions: 43.27 × 32.49 × 10.8 mm (without the heart rate sensor)

Net Weight: Approx. 24.5 g (weight without the strap)

Display:

• Size and Type: 1.74-inch AMOLED Touch Display
• Resolution: 336 x 480 pixels
• Screen Brightness: Maximum 1200 nits with auto brightness adjustment
• Cover Material: 2.5D reinforced glass

Shell Material: Aluminum alloy frame and high-strength fiber polymer

Sensors:

• Accelerometer
• Gyroscope
• Electronic compass
• Optical heart rate and pulse oximeter
• Ambient light sensor

Water Resistance Rating:

• 5ATM (50 meters in depth)
• Note: Suitable for swimming pools and shallow-water activities, but not for hot showers, saunas, or diving.

Data Connection:

• Supports GNSS, Bluetooth® 5.4
• Satellite Systems: BeiDou, GPS, GLONASS, Galileo, and QZSS

Haptic Motor: Linear motor

Battery:

• Capacity: 350 mAh
• Charging Type: Magnetic charging
• Charging Time: Approx. 75 minutes

Compatible Wrist Circumference: 135–205 mm

Band Strap Material: TPU

Operating System Compatibility: Android 8.0 or iOS 12.0 and above

Compatible Apps: Mi Fitness app

Items included:

• Crown × 1
• Strap x 1
• Charging cable x 1
• User manual x 1