Display 2″ Square LCD display Resolution: 320 x 385｜250PPI Sensor Heart rate sensor (with blood oxygen sensor) | Accelerometer Battery & Charging Typical use time: 18 days Capacity: 470mAh Specifications Bluetooth call: supported Speaker: supported 5ATM water resistance Wireless connectivity: Bluetooth® 5.3 Operating system: Xiaomi HyperOS Compatibility: only supports smartphones with Android 8.0 and above, iOS 12.0 and above Package contents Redmi Watch 5 Active / Magnetic charging cable / User manual (including warranty notice)