About this item [Always-on Transflective Display]: The ingenious transflective color display is always-on, ideal for outdoor sports. This smart watch allows you to clearly see the screen while taking advantage of low power consumption and eye protection even if the power-intensive backlight is not turned on. [Great Sports Companion]: The Amazfit Bip S Lite sports watch is waterproof to 5 ATM, so you can wear it while swimming in pools and open water. In addition, the smartwatch also supports 14 sports modes, which provide data such as track display, speed, heart rate, distance reminders, making your exercise more efficient. [High-Precision Heart Rate Monitoring]: Amazfit Bip S Lite monitors your heart rate throughout the day, including your resting heart rate and heart rate intervals, allowing you to know more about your physical condition. In addition, the watch will provide warnings on excessively high heart rate. [Helpful Sleep Monitoring]: Amazfit Bip S Lite helps measures your total sleep, light sleep, deep sleep, awake time, fall asleep time and wake-up time to give you an analysis of your sleep patterns. Precise Heart Rate Monitoring During Exercise with PPG Sensor, Real-Time Notifications for Workout Status and Excessive Heart Rate Data. Magnetic Sport Ear Hooks for Increased Stability, Easy to Remove and to Store. 8 Hours Battery Life on a Single Charge and 24 Hours with the Charging Case. Professional Sports Sound System Bring.s Immersive and Dynamic Sound.