CR211 1.3 inch TFT Color Screen 5ATM Waterproof Smart Watch, Support Sleep Monitoring Heart Rate Monitoring Blood Oxygen Monitoring Incoming Call & Information Reminder 1. Main control: MTK2523D, heart rate: Goodix 3011, blood oxygen: Goodix 3011, scientific sleep: Goodix 3011 2. Screen: 1.3-inch high-resolution color screen, resolution: 360*360 3. Battery: Lithium battery 300mAh-3.8V, battery life: 5-7 days 4. Material: metal middle frame + ABS + PC bottom shell + liquid silicone + MIMO wrist strap buckle assembly 5. Charging method: magnetic charging 6. Support Bluetooth: BLE4.2 7. Compatible system: Android: 5.0 iOS 10.0 8. Health function: heart health monitoring (screening for arrhythmia), accurate blood oxygen detection, scientific sleep (REM), breathing training, stress evaluation, 24-hour heart rate monitoring 9. Sports: 18 types of sports cover most of the daily sports scenes, automatic movement recognition, field expansion compass function, exercise time recording 10. Screen display: automatic adjustment of screen brightness, custom dial on APP (changeable when shooting), dynamic picture of dial, APP push dial with multiple excellent dials to choose from 11. Powerful functions: incoming callalarmschedule reminder, message display, steps, calories, standing reminder, 24-hour heart rate graph, remote camera, one-touch shooting, do not disturb mode, flashlight lighting 12. Language: The watch firmware comes with 8 languages, the APP supports more than 20 voices, and supports multiple languages around the world. 13. Interesting interaction: pets are kept in captivity, the calorie value consumed every day, raising small animals, a lot of fun 14. A powerful HIIT animation coach to help you better achieve high-intensity exercise effects