Dimensions 42.81mm × 25.42mm × 9.99mm *Height, width and thickness dimensions exclude the strap and protrusions Weight:14.9g (without strap) Band Strap Adjustable length?135-215mm Material:TPU Color:Ivory?Olive?Blue?Black?Pink Display 1.47" TFT display Resolution:172 x 320 pixels?247 PPI Brightness:Max > 450 nits Material?Tempered glass with anti-fingerprint coating | 2.5D micro-curved glass Band faces:100+ Sensors PPG sensor | Accelerometer | Motor?ERM Battery Charging type:Magnetic charging Charging time:Less than 120 minutes Typical use time:14 days Capacity:210mAh Fitness 50+ fitness modes Health Heart rate monitoring SpO? 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 tracking Female 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 measurement Specifications 5ATM water resistant App: Mi FitnessBluetooth 5.1 BLECompatibility: supports smartphones with Android 8.0/ iOS 12.0 and above Package contents Band body ×1 Band strap ×1Dedicated charging cable ×1User manual ×1