Features: 1. Heart rate tracking: Real-time monitoring of heart rate changes during exercise The intensitv of the exercise has led to a healthv exercise. 2. Oxygen measurement: Detect anytime and anywhere, and you can measure without connecting a mobile phone. Tap blood oxygen function, monitors operation, can directly display the phase on the braceletClose data. 3. Sleep quality monitoring: The watch automatically monitors the state of the body and automatically turns on the sleep modes Generate sleep time data and sleep quality analysis data on the APP. Description: The thin and light body is equipped with a 150mAh high-capacity battery, and the daily battery life isup to 5-7 days. Specifications: Model: MK26 Battery capacity: 150mAh Case material: Zinc alloy Overall thickness: 12mm Strap width: 10mm Waterproof level: IP67 Strap color: Rose gold, silver (optional) Display screen: 1.14 inch high-definition color screen Package Included: 1 * Watch Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.