Fangrui Product Details 1. Cr211 1.3 Inch Tft Color Screen 5atm Waterproof Smart Watch, Support Sleep Monitoring Heart Rate Monitoring Blood Oxygen Monitoring Incoming Call & Information Reminder 2. Main Control: Mtk2523d, Heart Rate: Goodix 3011, Blood Oxygen: Goodix 3011, Scientific Sleep: Goodix 3011 3. Screen: 1.3-inch High-resolution Color Screen, Resolution: 360*360 4. Battery: Lithium Battery 300mah-3.8v, Battery Life: 5-7 Days 5. Material: Metal Middle Frame + Abs + Pc Bottom Shell + Liquid Silicone + Mimo Wrist Strap Buckle Assembly 6. Charging Method: Magnetic Charging 7. Support Bluetooth: Ble4.2 8. Compatible System: Android: 5.0 Ios 10.0 9. Health Function: Heart Health Monitoring (screening For Arrhythmia), Accurate Blood Oxygen Detection, Scientific Sleep (rem), Breathing Training, Stress Evaluation, 24-hour Heart Rate Monitoring 10. Sports: 18 Types Of Sports Cover Most Of The Daily Sports Scenes, Automatic Movement Recognition, Field Expansion Compass Function, Exercise Time Recording 11. 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 12. 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 13. Language: The Watch Firmware Comes With 8 Languages, The App Supports More Than 20 Voices, And Supports Multiple Languages Around The World. 14. Interesting Interaction: Pets Are Kept In Captivity, The Calorie Value Consumed Every Day, Raising Small Animals, A Lot Of Fun 15. A Powerful Hiit Animation Coach To Help You Better Achieve High-intensity Exercise Effects