Fangrui Product Details 1. K80 1.57 Inch Silicone Band Ip67 Earphone Detachable Smart Watch Support Bluetooth Call 2. 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 3. Display: 1.57 Inches Ips Screen 4. Battery: 3.7v220mah 5. Handset: Support 6. Receiver (mic): Support 7. Touch: Support 8. Acceleration Sensor: Support 9. Hall Sensor: Support 10. Charger Interface: Magnetic Charging 11. Overall Size: 55x23x12mm 12. Weight: About 27g (without Strap) 13. Headphone Weight: About 15g 14. Material: 15. - Cover: Glass 16. - Middle Frame: Zinc Alloy 17. - Bottom Case: Hybrid Plastic (abs+pc) 18. - Strap: Silicone 19. Waterproof Grade: Ip67 20. Processor: Realtek 8762dt 21. Bluetooth Version: 5.0 22. Operating System: Android 5.0 Or Above, Ios 10 Or Above