O2Tracker® Z91 - Pro Max Smart Watch Health Monitoring Waterproof:waterproof ip68

Waterproof:waterproof ip68

Blood oxygen chip:GH3220 RF analog front-end+ SFH2201

Sports modes:Sports steps

Watch band

O2Tracker® Z91 - Pro Max Smart Watch Health Monitoring Waterproof:waterproof ip68KEY BENEFITS: 1. Tasbih, pilgrimage alarm clock , compass 2. Independent time; 3. Independent alarm clock; 4. Lock wallpaper (update); 5. Encoder zoom in and zoom out functions; 6. Shutdown slide and SOS; 7. The dial pointer is always on; 8. Dial pointer uniform rotation function; 9. Charging horizontal and vertical screen; 10. The icon in the middle of the starry sky remains the largest, and it also remains the largest when dragging; 11. Language