Long Battery Life: Charging Time: 1.5-2 Hours Working Time: 7+Days Standby Time: 30+Days Tips: *When testing the heart rate, please fit the back of the watch to the skin of the wrist, which is more convenient for testing data (data is for reference only and cannot be used as medical research) *Clean the smart watch regularly, especially its inner side and keep it dry. *Adjust the fitness tracker tightness to ensure air circulation. Sports Modes: walking, running, cycling, skipping rope, badminton, basketball, football, swimming -Daily Modes: steps, calories, distance, stopwatch, GPS outdoor running, menstrual cycle setting, drink water reminder, sedentary reminder, breath training -Health Modes: heart rate, blood pressure, blood oxygen, sleep (one week's data can be viewed through the APP) -Other Modes: message reminder, custom dial, alarm clock, camera control, music control, raise the wrist to brighten the screen, weather, flashlight, adjust screen brightness, time format