K80 1.57 inch Steel Band IP67 Earphone Detachable Smart Watch, Support Bluetooth Call 1. Support call records, frequent contacts, active calls, dial pad, phone book, caller name or phone number display, reject calls, pick up the automatic answer, put back the automatic hang up, music, sliding touch, time setting, time format , add components, heart rate, blood pressure, blood oxygen, blood sugar, body surface temperature, ambient temperature, multi-sport mode, sleep monitoring, step counting, alarm clock, stopwatch, drink water reminder, sedentary reminder, display brightness, raise the wrist to brighten the screen, Reminder switch, monitoring alarm, information push, find mobile phone, find bracelet, take pictures, 24-hour heart rate monitoring, weather, applications, automatic time synchronization 2. Display: 1.57 inches IPS screen 3. Battery: 3.7V220mAh 4. Handset: Support 5. Receiver (MIC): Support 6. Touch: support 7. Acceleration sensor: support 8. Hall sensor: support 9. Charger interface: magnetic charging 10. Overall size: 55x23x12mm 11. Weight: about 27g (without strap) 12. Headphone weight: about 15g 13. Material: Cover: glass Middle frame: zinc alloy Bottom case: Hybrid plastic (ABS+PC) Strap: Steel 14. Waterproof grade: IP67 15. Processor: Realtek 8762DT 16. Bluetooth version: 5.0 17. Operating system: Android 5.0 or above, iOS 10 or above