JOYROOM JR-FV1 Venture Series 1.43 inch Bluetooth Call Smart Watch Supports Sleep MonitoringBlood Oxygen Detection 1. Body material: zinc alloy+ABS 2. Charging input: 5V1A 3. Charging method: magnetic charging 4. Working frequency: 2402MHz-2480MHz 5. Maximum output power: 3.55dBm 6. Bluetooth version: BT5.3 7. Memory: 128MB 8. Waterproof level: 1ATM 9. Bluetooth effective distance: 10m 10. Screen material: AMOLED 11. Screen size: 1.43 12. Screen resolution: 466x466 13. Touch mode: full screen touch 14. Charging time: about 2 hours 15. Daily use time: about 14-18 days 16. Connection standby time: about 30-40 days 17. Battery capacity: 300mAh 18. 326PPI high-resolution display, supports all-weather screen-off display 19. ATM level waterproof, with 1ATM waterproof level, can withstand the pressure of 10 meters of water depth 20. Automatically identify and record your exercise data to help you analyze and improve your exercise effects 21. 20 days long battery life, get rid of battery anxiety 22. 100+ selected dials in various styles, with customized dials 23. All-weather heart rate, sleep monitoring, blood oxygen detection, health data at a glance 24. Use intelligent energy-saving technology to manually adjust brightness and power consumption according to your usage habits and scenarios to extend battery life.