Xiaomi Smart Band 9 Active Features & Specifications 

Key Features:

• Upgraded All-Round Sleep and Health Monitoring
• 100+ Watch Faces
• Up to 18 Days Battery Life
• 5 ATM Water Resistance
• Supports 50 Sports Modes

Display:

• Type: TFT
• Size: 1.47"
• Resolution: 172 x 320 pixels
• PPI: 247
• Material: Reinforced Glass Cover

Battery & Charging:

• Capacity: 300mAh
• Charging time: Less than 120 minutes
• Typical use time: Up to 18 days
• Charging type: Magnetic charging

General Information:

• Bluetooth: Bluetooth 5.3 BLE
• App: Mi Fitness
• Compatibility: Android 8.0 & iOS 14.0 and above
• Health Functions: Heart Rate Monitoring, SpO₂ Tracking, Sleep Tracking, Women's Health Management, Stress Measurement
• Sensors: PPG sensor, Accelerometer, ERM Motor
• Band: Material: TPU | Adjustable length: 135–215mm