Xiaomi Watch S4 41mm Fluororubber Strap

Display: 1.32-inch round AMOLED screen with a sharp resolution of 466x466 pixels and a brightness of up to 1500 nits. Durability & Strap: Rated for 5ATM water resistance and comes with a sporty, comfortable fluororubber strap. Battery Life: Up to 8 days of light usage, 4 days of normal usage, or 3 days of heavy usage from its 320mAh battery. Health & Fitness: Tracks heart rate, blood oxygen, sleep, stress, and skin temperature, and supports over 150 sports modes with multi-system GPS (GPS, Galileo, Glonass, BeiDou, QZSS).