Fangrui Product Details 1. J45 1.43 Inch Bt5.1 Smart Sport Watch, Support Sleep Heart Rate Blood Oxygen Blood Pressure Health Monitor 2. General Specifications: 3. App: Dafit 4. Case Material: Abs+pc 5. G-sensor: Qma6100p 6. Middle Frame Material: Zinc Alloy 7. Waterproof Level: Ip67 8. Battery Life: 5-7 Days (depending On Usage Scenarios) 9. Charging Time: Less Than Or Equal To 2h 10. Compatible With Smartphone Systems: Android 8.0 Or Ios 9.0 Or Above Systems That Support Bluetooth 5.1 Ble 11. Watch Firmware Language: 17 Languages (russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean, Dutch, Hindi) 12. App Language: 15 Languages (russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean) 13. Hardware Configuration: 14. Mcu: Sf551 15. Flash: 128mb 16. Heart Rate Chip: Hx3605 17. Bluetooth: Ble5.1 18. Display: 1.43 Inch, 466x466 Amoled Lcd 19. Touch: Full Screen Touch + 2 Button 20. Battery: 260mah Polymer Battery 21. Software Configuration: 22. Built-in Dials: 8 Built-in Dials, Supports Custom Dials 23. Basic Functions: Data, Female Physiological Cycle, Exercise Mode, Call History, Contacts, Call Reminderanswerreject, Music, Message Push, Sedentary Reminder, Alarm Clock, Wrist Flip Screen Onoff, Shake To Take A Photo, Do Not Disturb Mode, Search For Phone, Step Count, Stopwatch 24. Bluetooth Call Connection: Connect 1 Time 25. Health Management: Sleep Monitoring, Heart Rate, Blood Pressure, Blood Oxygen Detection 26. Sports Modes: 107 Sports Modes