Xiaomi Smart Band 9 Pro

Key Features:

• Display Type: 1.74-inch AMOLED Touch Display
• Resolution: 336 x 480 pixels | 336 PPI
• Design: Narrow-edge quadrilateral design | Aluminum alloy frame
• Dimensions: 43.27 x 32.49 x 10.8mm (without heart rate sensor)
• Weight: 24.5g (without strap)
• Brightness: Max 1200 nits with auto brightness adjustment
• Refresh Rate: 60Hz
• Cover Material: 2.5D reinforced glass
• Shell Material: Aluminum alloy frame and high-strength fiber polymer
• Wrist Strap Material: TPU 
• Wrist Circumference: 135-205mm
• Connectivity: Bluetooth® 5.4 | Supports GNSS 
• Battery: Li-Ion | 350mAh
• Battery Life: Up to 21 days (typical usage mode)
• Charging type: Magnetic charging
• Charging Time: Approx. 75 minutes
• Water Resistance: 5 ATM (up to 50m depth)
• Compatibility: Android 8.0 or iOS 12.0 and above
• Compatible Apps: Mi Fitness app