1. Matching system: HarmonyOS 2 and above, Android 6.0 and above, iOS 9.0 and above
2. Screen: 1.64 inches AMOLED touch color screen, resolution 280×456
3. Battery capacity: 451mAh wireless charging dock
4. Theoretical charging time: about 2.5 hours
5. Theoretical working time: typical usage scenarios can last up to 7 days
6. Body material: aluminum alloy middle frame, plastic + sapphire bottom case
7. Strap material: Viton
8. Strap adaptation circumference: M size 130-160mm L size 161-200mm
9. Bluetooth frequency band: 2.4G
10. Bluetooth protocol: Bluetooth 5.1
11. Sensors: acceleration sensor, gyroscope sensor, optical heart rate sensor, temperature sensor, ALS sensor, differential pressure sensor, Hall sensor, ECG acquisition sensor
12. Operating system: HarmonyOS
13. Support message reminder, voice assistant, alarm clock, timer, OTA software upgrade
14. Waterproof and dustproof: IP68
15. Size: 51x38x13.6mm
16. Weight: about 40.9g (without strap)
17. Functions: blood pressure measurement, ECG acquisition, heart rate monitoring, blood oxygen monitoring, sleep monitoring, breathing training, pressure monitoring, body temperature research, 70+ exercise modes
18. Language support: English
19. Packing list:
– Smart Watch (including L size watchband and L size airbag) x 1
– M size airbag (including airbag cover) x 1
– M size watchband x 1
– Independent cover x 1
– L size airbag cover (spare) x 1
– M size airbag cover (spare) x 1
– Charging base x 1
– Quick start x 1
– Wearing guide x 1

Shipping Times: 12-21 days
Shipping Cost: Free shipping