Fangrui Product Details 1. Hd7max 1.9 Inch Multifunctional Waterproof Smart Watch With Nfc Function 2. Material: Metal, Tempered Glass, Silicone, Electronic Components 3. Functions: Multiple Sports Mode Tracking, Heart Rateblood Pressureblood Oxygen Monitoring, Breathing Exercise, Dialinginformation Reminder, Sleep Monitoring, Video Entertainment, Smart Reminder, Remote Control Selfie 4. Screen Size: 1.9 Inches (tft Color Screen) 5. Menu Language: Simplified Chinese, Traditional Chinese, English, German, French, Spanish, Korean, Japanese, Russian, Portuguese, Italian, Ukrainian, Arabic 6. Screen Resolution: 320 X 390pixel 7. Bluetooth Version: 5.0 8. Wireless Distance: 5-10m (inclusive) 9. Body Memory: 128m 10. Wearing Method: Wristband Type 11. Compatible System: Fully Compatible 12. Communication Function: Support 13. Battery Capacity: 380mah Lithium Battery 14. Battery Voltage: 3.7v 15. Charging Time: About 2 Hours 16. Charging Method: Magnetic Charging 17. Operation Mode: Touch + Button 18. Waterproof Grade: Ip68 19. Magnetic Fast Charging, More Convenient To Use, Fast Full Charge 20. Led Light Sensor Design On The Back Of The Watch, Real-time Detection Of Blood Pressure, Heart Rate, Blood Oxygen 21. The Watch Supports Nfc Access Control Unlocking Function