24/7 Heart Rate Sleep Monitor: With built-in PPG sensor coupled with AI intelligent algorithm, the smart watch provides sleep quality and 7*24 continuous heart rate monitor. The watch can monitor your sleep from 8.00PM~9.00AM and give you analysis of deep sleep, light sleep and wake up with only 29g. It is very light to wear without burden. (The related data is for reference only, not for medical purposes.) Swim Watch 5ATM Super Water Resistant: It can record swimming distance, SWOLF, average pace and other data scientifically with high-precision gyroscope and magnetic sensor. 5ATM waterproof enables the watch to be used during washing hands, swimming or in rainy days. (Do not support hot water shower, diving, surfing, etc.) Track Your Workout with 18 Sports Modes: It can track your steps, calories, standing duration on the watch beyond the fitness tracker. Allow you to have quick access to different activity mode and view the data of activity. Carefully developed skipping,sit-ups, football, badminton, yoga, etc 18 sports modes, your love is worth to be recorded. Customize Your Own Watch: New Version 1.3 inch HD screen smart watch can customize watch face by uploading your picture. It also supports the adjustment of brightness screen time and brightness level. Download 'Zeroner' App to Connect : You can get and read up to 10 messages or calls on the watch. (Cant answer call or reply messages) To be more people-oriented, it allows you to set vibration mode and cycles in the vibration remind. This smart watch also supports alarm, schedule, compass, music control and remote camera.