Mi WatchSix upgrades for a sportswear style worth emulating8 reasons to buy1.39-inch 326 ppi high-resolution displaySupports Always On Display32g lightweight design3 strap colors / 3 watch case colorsOver 100 select watch facesSupports live watch face and custom watch faces12nm high-end GPS chipFour real-time locationing modesBlood oxygen testingTest anytime and monitor your health16-day ultra-long battery life50 hours of battery life for sports and GPS117 sports modes*Firstbeat algorithm24-hour heart rate monitorSleep tracking/stress monitoring/body energy1.39-inch 326 ppi high-resolution displayKeep tabs on your healthThe all-day Always-On Display* feature can display time, even in direct sunlight. Clearly displays incoming calls, notifications, fitness, and other important information.32g lightweight design*Slim and lightweightLight as a lipstick tube, thanks to its brand-new, tailored frame*Unleash your energy and make your workouts more enjoyable.Upgraded battery life16-day ultra-long battery life The longer battery life lets you travel stress-freeGlobal upgrades of low-power AI algorithms extend the battery life of the watch. Charge instantly with the easy magnetic charging cable16 days Typical usage mode*22 days Long battery mode*50 hours Outdoor sports mode*High-end GPS chip with four modesAccurately records your movementsThe built-in 12nm process high-end Airoha GPS chip supports synchronous positioning by the four major positioning systems: GPS, GLONASS, Galileo and BDS. It works with customized mileage optimization algorithms to improve movements and mileage accuracy, making your fitness data more precise.50-hour battery life for sports with GPS*Your companion through 20 marathonsThe high-end GPS chip works with ultra-low-power algorithms to continuously record 50-hours of movement with real-time positioning. Now your extreme sports adventures are no longer dictated by battery life.117 workout modes for even more choicesSupports 17 professional workout modes, including triathlons, swimming and HIIT, as well as 100 extended workout modes*. The powerful Firstbeat algorithm can accurately monitor and analyze over 30 key data points, like heart rate, speed and calories burned, making your workouts more efficient.Automatic workout detectionTap to begin your favorite workoutIt automatically detects and monitors when you start workout. It also pauses and goes when you do, ensuring that all your movements are recorded. Or simply tap the SPORT button to start your favorite workout.All-new blood oxygen testing to check your health status anytimeThe blood oxygen testing is especially important for those who are older, obese, or working under pressure. Timely blood oxygen testing can provide a better picture of your physical condition. Stay calm when you experience shortage of breath, weakness or dizziness. First check if your blood oxygen saturation is low.24-hour real-time heart rate monitoringContinuously records up to 30 days of your resting heart rateIt accurately monitors you even during high-intensity workouts, such as trail running and cycling. You will be alerted when your heart rate is too high. It can also automatically save the resting heart rate curve from the past 30 days and continuously track your fitness gains.Daily health statistics at a glanceDaily health statistics, such as heart rate, fitness, and sleep, are shown in detail to provide a clear picture of your health. You can also add various health plans to practice self-discipline.SpecificationsConnectivity: Bluetooth 5.0Color: Black/Navy Blue/BeigeSensors: Heart rate sensor, acceleration sensor, gyroscope, geomagnetic sensor, air pressure sensor, ambient light sensorDimensions: 45.953.3511.8mm (not including the strap and local protrusions)Satellite positioning systems: GPS, GLONASS, Galileo, BDSFrame: Glass fiber-reinforced polyamideBattery capacity: 420mAhDisplay: 1.39-inch AMOLED screenWater resistance rating: 5ATMResolution: 454454Working temperature: -10C to 45CStrap: TPUSupported systems: Android 5.0 & iOS 10 and aboveAdjustable length: 130-220mmCertification: Q/021XWT-2019System language: English / Simplified Chinese / Spanish / Russian / Italian / French / German / Portuguese / Ukrainian / Polish / Turkish / Czech / Thai / Indonesian / Greek / Vietnamese / Romanian / Dutch / Traditional Chinese / Korean / Japanese