1.55" HD touch display: High-resolution and colourful, more details displayed Bigger screen-to-body ration, 10% increase from previous model Mi Watch Lite. Better visual and touch control experience. Compact design Multiple colours options: Three colours for the watch frame and three more for the watch strap*Switch up your style Freely switch between 100+ watch faces: Multiple trendsetting combinations to match your mood and outfit of the day. 100+ workout modes.Track your excercises like an expert: 17 professional modes, including HIIT and Yoga to help you achieve your fitness goal you wanted. 100 extended workout modes what will offer you more options. High-precision GPS chip. Supports the four major global positioning systems: The built-in GNSS chipset comes with improved performance for more precise position tracking. Four major global positioning systems--GPS, GLONASS, Galileo, BDS--are supported. Blood Oxygen Measurement*: Blood oxygen saturation (SpO2) level indicates the amount of oxygen in the blood. Get an SpO2 measurement anytime anywhere for a peace of mind. Supports continuous SpO2 tracking during sleep. Sleep Monitoring: Monitors your sleep 24-hour and provides detailed reports on deep sleep, light sleep and REM* stages to help you find out what is going on during your sleep. 24-Hour Heart Rate Tracking: Built-in high-precision PPG sensor to track your heart rate 24 hours a day. Sends alert when abnormal heart rate is detected*. Get health data with one tap: Know your body better by viewing your heart rate, workouts, sleep and other health data in the Xiaomi Wear/Xiaomi Wear Lite app*. Supports data synchronization with Strava*, so that you can share your workout achievements with your friends. 10-day extra-long battery life: New magnetic charging, just touch to charge.10 days typical usage mode* . 14 hours continuous GPS sports mode. Desclaimer *The Blood Oxygen Measurement (SpO2) feature is not intended for diagnosis, prevention, monitoring, prediction, prognosis of any disease, investigation of physiological processes or any other medical purpose. All data and tracking should be used for well-being and personal reference only. If you feel uncomfortable, please rely on professional medical devices or consult a doctor for assistance. *REM: need to turn on advanced sleep monitoring in additional settings on Xiaomi Wear/Xiaomi Wear Lite App to have this feature. *Battery life test data has been obtained from 70mai Labs. Actual results may vary. *The typical usage mode is measured based on: set to the default settings, heart rate monitoring set as the default 30-minute interval, sleep monitoring on (with advanced monitoring off), stress all-day monitoring on, 2 times of blood oxygen measurement every day, 24-hour non-stop step tracking on, 50 notifications displayed every day, 2 alarms set every day, 100 times of raise-to-wake to check the screen every day, data synced with the phone once every day, 35-min outdoor sports (with GPS on) every week.