Xiaomi Smart Band 9 Pro

Key Features:

• Display: 1.74”AMOLED
• Resolution: 360×480, 336 PPI
• Screen brightness: Max 1200 nits
• Wireless connectivity: Bluetooth®5.4
• Wrist strap material: TPU
• Adjustable length: 135-205mm
• Operating temperature: 0°C to 43℃
• Battery Capacity: 350mAh
• Battery Life: 21 days
• Charging time: Approx 75min
• Supported App Mi Fitness
• 2.5D cover glass
• 77% screen-to-body ratio
• 1200nits Max brightness with ALS60Hz high refresh rate for smooth viewing
• High quality metal frame with new straps
• Linear motor with 20+ vibration modes
• 21-day ultra-long battery life
• Professional Workout Analysis
• 5ATM water resistance 

General Features:

• Weight: 40.4g with strap
• Dimension: 43.3×32.5×10.8mm
• Sensors: Heart rate sensor (with blood oxygen sensor), accelerometer,gyroscope, electronic compass,
• ambient light sensor
• System requirements: Android 8.0，iOS12 or above
• Satellite Positioning Systems: BeiDou, GPS, GLONASS, Galileo, QZSS
• Independent GNSS five-satellite positioning
• Newly added compass function
• Multi-dimensional health management: SpO₂ monitoring |sleep monitoring| stress monitoring| Women's Health management | Breathing exercises to relieve stress.