Xiaomi Watch S4 41mm Leather Strap

Display & Design: 1.32-inch AMOLED screen (466x466 px, up to 1500 nits brightness), 41.2mm stainless steel case, 32g weight. Health & Sensors: Tracks heart rate, blood oxygen (SpO₂), sleep, stress, and skin temperature. Includes accelerometer, gyroscope, barometer, and compass. Battery Life: 320mAh battery. Up to 8 days (light use), 4 days (normal use), or 3 days (heavy use). Sports & Safety: Supports 150+ sports modes with multi-system GPS and fall detection. Features Emergency SOS and an emergency siren. Smart Features: Runs on Xiaomi HyperOS 3, has Bluetooth 5.4 calling, NFC payments, and 5ATM water resistance.