1. 1.54 inch high-definition color screen + 2.5D touch arc screen 2. 240x240IPS pixels 3. All-weather automatic heart rate monitoring 4. Using a heart rate sensor, the back LED illuminates the optical fiber to the hand, and monitors the change of the heart rate through the different flow speeds of the blood and the scattering of the amount of light. 5. Detect the blood oxygen content through the sensor. Aerobic exercise and anaerobic exercise can be seen at a glance 6. Support sleep monitoring, push sleep report early in the morning 7. IP68 waterproof 8. Support call reminder & rejection 9. System requirements: Android 5.0 and above, iOS8.0 and above 10. Bluetooth version: 4.0 11. Battery capacity: 200mAh
