LEMFO ELF3 1.39 inch TFT Round Screen Outdoor Silicone Strap Smart Watch Supports Blood Oxygen Monitoring 1. Bluetooth: Bluetooth LE 5.0 compatible with 4.0 2. LCD: 1.39-inch TFT round screen 3. Resolution: 360x360 4. Touch control: capacitive multi-point full touch 5. Charging method: magnetic charging 6. Waterproof level: IP67 7. Battery capacity: 380mAh 8. Supported systems: Android 4.4 or above, iOS 8.0 or above 9. Supports Bluetooth music, heart rate, blood oxygen monitoring, sleep monitoring, sedentary reminder and other functions 10. Support Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish 11. 100+ sports independent modes, real-time monitoring 12. Use advanced heart rate sensor to capture more effective signals 13. Bluetooth high-fidelity calling, one-touch dialing 14. Record your sleep quality and sleep cycle 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.