Advanced AMOLED ScreenThe high resolution 390 x 390 pixel screen made by AMOLED creates a vivid and colorful display. Life WaterproofThe health tracker watch is waterproof up to 3 ATM. The battery is usually used at least 7 days. Always On DisplayThis smart watch lets you always see the time. No need to raise your wrist to see the time. Aluminum & Slim FrameThis aluminum smartwatch is not only durable but also more stylish. 8mm thickness makes it slim, fit your clothes. Heart Rate MonitoringThe smart watch can accurately track your heart rate for 24 hours. Blood Oxygen MeasurementMeasure your blood oxygen and let you know how your body is breathing. Sleep Monitoring with REMThe fitness watch tracks and records your sleep quality, such as deep sleep, light sleep, wake up, REM. [Fitness Tracker] The watch supports 14 sports modes. Pedometer WatchThis health watch can accurately record daily steps, calories and distance. Incoming Calls & NotificationsWhen there is a message, call or notification, the smart watch will vibrate to remind you.