QS16Pro 1.83 inch Heart Rate Blood Pressure Monitoring Waterproof Sports Smart Watch 1.CPU: RK8752X 2. Display: 1.83 inches, 240 x 280IPS 3. Touch screen: full touch + buttons 4. Configuration parameters: RAM: 160kB + ROM: 384kB + FLASH: 64Mb + main frequency: 40M 5.Bluetooth version: 5.0 6. Heart rate: Wiki Source VC11 7.G-SENSOR: Taiwan Silicon STK8321 8. Battery: 270mAh large-capacity polymer battery cell 9. Full charging time: 3 hours 10. Duration of use: 7-10 days 11. Standby time: 12-15 days 12. Charging: Charging clip 13. Support system: Android 4.4 and above, IOS 8.0 and above, supports Bluetooth 4.0 14. Supported languages: Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean, Dutch, Indian idiomatic 15.Material: PC+ABS, silicone 16. Waterproof level: IP67 17.Watch size: 45.2 x 38 x 10MM 18.Strap size: 180mm-225mm 19. Net weight: 37 grams Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.