1.47" ultra-large display: The larger size and viewable area allow more functionality and more eye-catching information and content. You can check your heart rate while exercising, or glance at the news during your commute, all at the flick of your wristAll-day blood oxygen monitoring: The upgraded blood oxygen monitoring not only operates all day long but also sends notifications about low blood oxygen saturationAll-day heart rate monitoring: Your heart rate can be monitored 24 hours a day, Notifications can also be sent when your heart rate is too high or too low, allowing you to monitor your heart condition any timeLight and slim, 9.99mm body: The slim and exquisite design makes it imperceptible no matter whether you're working, exercising or sleeping, delivering a more comfortable experience50+ sports modes: Supports more than 50 sports modes, covering almost all kinds of sports scenarios. Keep accurate track of exercise duration and calorie consumption, making your exercise more fulfilling Specifications: Display1.47" TFT displayResolution: 172 x 320 pixels, 247 PPIBrightness: Max>450 nitsMaterial: Tempered glass with anti-fingerprint coating/2.5D micro-curved glassBand faces: 100+SensorsPPG sensor/Accelerometer/Motor: ERMBatteryCharging type: Magnetic chargingCharging time: Less than 120 minutesTypical use time: 14 daysCapacity: 210mAhFitness50+ fitness modesHealthHeart rate monitoringSpO? tracking The SpO? 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. Sleep trackingFemale health tracking This feature should not be used or relied on for any medical purposes. It may not accurately predict your menstrual cycles or related information. All data and tracking should be used for personal reference only. Stress level measurementWaterproof5ATM water resistantApp nameMi FitnessBluetooth5.1 BLEOSsupports smartphones with Android 8.0/ iOS 12.0 and above