Fangrui Product Details 1. Dw35 1.75 Inch Full Screen Ip67 Waterproof Smart Watch, Support Sleep Monitor Heart Rate Monitor Bluetooth Call 2. Bluetooth: Ble5.0 3. Waterproof Level: Ip67 4. Storage: Built-in Ram 64mb + Rom 64mb 5. Display Screen: 1.75 Inches, Resolution: 320*385 Pixels 6. Battery Capacity: 200 Mah 7. Charging Method: Wireless Charging 8. Charging Time: About 1.5 Hours 9. Standby Time: 2-7 Days 10. Material: Zinc Alloy Case + Imil Back Cover + Liquid Silicone Strap 11. Functions: Heart Rateblood Pressureblood Oxygenbody Temperatureecg Measurement, Sedentary Reminder, Sleep Monitoring, Bluetooth Answerreject, Caller Id, Pedometer (exercise Time, Mileage, Calories), Exercise Mode (strike, Outdoor Running, Climbing, Cycling, Basketball, Badminton, Table Tennis, Football), Caller Idreminder, Message Push, Shake To Take Pictures, Bluetooth Music Playback, Stopwatch, Alarm Clock, Calendar, Etc. 12. Wristband Ui Language: Simplified Chinese, English, French, German, Spanish, Portuguese, Italian, Russian, Polish, Arabic, Thai, Vietnamese, Traditional Chinese, Romanian, Turkish 13. App Support Languages: English, French, German, Spanish, Portuguese, Italian, Russian, Polish, Turkish, Arabic, Thai, Hebrew, Simplified Chinese, Vietnamese, Romanian 14. Support Mobile Phone System: Ios10.0 Or Above, Android 4.4 Or Above