1. Item type: digital watch 2. Function: sleep tracker, call reminder, message reminder, waterproof, GPS, heart rate monitor, fitness tracker, Bluetooth 3. Style: Sports 4. Case thickness: 11 mm 5. Waterproof depth: 3Bar 6. Model: Smart Watch 7. Case shape: rectangular 8. Case material: rubber 9. Strap length: 20cm 10. Buckle type: buckle 11. Dial diameter: 21mm 12. Strap width: 21mm 13. Touch screen: yes 14. Applicable age groups: men, women, boys, girls, teenagers, unisex 15. Function 1: Smart bracelet 16. Project Type: Smart Watch 17. Function 2: Fitness, heart rate, blood pressure, Bluetooth, pedometer, running 18. Function 3: G vibration, waterproof 19. Compatibility: For Android 4.4 and above, IOS 8.0 and above 20. Function 4: Smart sports watch 21. Function 5: Smart Watch 22. APP supports languages: English, Russian, Portuguese, German, Spanish, Japanese, French, Italian, etc. 23. Function 6: Smart watch men 24. Function 7: Smart Watch Women 25. Fitness watch: Yes 26. Function 8: Men's sports watch 27 mobile system requirements Android 4.4 and above, IOS 8.0 and above, Bluetooth 4.0 28. Bluetooth version: BLE 4.0 29. Bluetooth chip: MCU ST17H25 30. Heart rate module: HRS3300 31. Screen display: 0.96 inches / TFT 32. Battery capacity: 110mAh 33. Standby time: about 15 days 34. Working time: about 3-5 days 35. Button: touch button 36. Built-in motor, vibration reminder 37. Charging port: USB cable 38. Waterproof rating: IP67 39. Sensor: gravity sensor Shipping list: B05 smart bracelet x1 User Manual x1 Original box x1