Product Features: - Compatible with both iPhone and Android devices. - Connects to the Mi Fitness app for iPhone and Android. - Stylish and simple sports wristband with a wide range of features. - Tracks 150 different sports/physical activities. - Battery lasts approximately 16 days. - Charges faster than the previous generation. - Improved screen accuracy and brightness compared to the previous generation. - Equipped with a light sensor that adjusts brightness based on ambient lighting. - Faster processor and more precise sensors. - New watch faces and greater customization options. - Tracks heart rate. - Monitors blood oxygen saturation. - Monitors sleep quality. - Measures psychological stress and tension. Warranty: 1 year.