1. CPU: HS6620D 2. Built-in: RAM 128KB+,ROM 256KB 3. Expansion: SPI ROM 4 MB 4. Display: 1.3 inch TFT Resolution: 240*240 5. Touch screen: single touch 6. Bluetooth: 4.0 7. Battery: 140mAh large capacity polymer battery 8. Interface: magnetic charging base 9. Function: multiple sports modes (walking, running, cycling, badminton, skipping rope, basketball, football, swimming), detachable strap, IP68 waterproof, swimming, DND mode (do not disturb mode), weather, blood pressure Monitoring, blood oxygen monitoring, camera control, music control, alarm clock, stopwatch, sedentary reminder, sleep monitoring, Bluetooth push information, QQ, WeChat, Twitter, Facebook and other timely information Bluetooth push information QQ, WeChat, Twitter, Facebook and other timely information 10. APP name: Da Fit 11. Support Android 5.1 and above, support IOS 9.0 and above 12. Standby time: more than 8 days 13. Use time: more than 3 days 14. Size: 42x35x9.6mm