Highlights: Model: HW21 Body Dimension: Diameter=42mm, Thickness=9.2mm Band Dimension: Width=20mm，Unfolded length 248mm Weight: 40g (Including band) Material: Metal + ABS + Rubber Display: 1.28inch TFT Screen Definition: 240 x 240 Pixels Battery Capacity: 200mAh Charge: Magnetic Charging cable Bluetooth Version: Bluetooth V5.0 Sensor: PPG Bio Heart Rate, G-sensor Waterproof & Dustproof: IP68 Operation Temperature: -20℃~45℃   Product Description: -Lightweight and fashionable full-metal design -Full circle HD touch screen -Rotating dial operation, Smooth operation without lags -Rich and exquisite dial backgrounds selection, Customize Watch Face -24h Bio Heart Rate Tracker, always pay attention to heart health -12 professional sports modes, making sports safer and more efficient -Scientifically monitor sleep and record the complete sleeping status -Exclusive “Wear fit pro” APP for real-time synchronization of health data -Daily activity tracking, convenient life assistant   What is in the box: 1*Smartwatch 1*Magnetic Charging Cable 1*Product Manual   Weight: 0.3   Color: Random   SKU: 210501170823