Xiaomi Watch S4 41mm (Fluororubber Strap Black)

The Xiaomi Watch S4 (41mm) features a 1.32-inch AMOLED display, comprehensive health tracking (including skin temperature and SpO₂), 150+ sports modes with dual-frequency GPS, and safety features like an SOS button. It offers up to 8 days of battery life under light usage and has a premium stainless steel build with a rotating crown for navigation.

Display and design

• Display: 1.32-inch AMOLED display with 466x466 resolution, up to 1500 nits brightness, and adaptive brightness.

• Build: Premium stainless steel body.

• Navigation: Includes an upgraded rotating crown for smooth operation

Health and fitness tracking

• Health Monitoring: Tracks heart rate, SpO₂, sleep, stress levels, and skin temperature.

• Female Health: Includes skin temperature monitoring for enhanced menstrual cycle prediction.

• Sleep: Provides advanced sleep tracking and a sleep improvement plan.

• Sports Modes: Supports over 150 sports modes with auto-tracking and a "Sports Vlog" feature.

• GPS: Features dual-frequency L1+L5 GPS for precise outdoor activity tracking.

Safety and connectivity

• Safety: Includes an SOS button, loud alarm, and real-time location sharing with contacts.

• Fall Detection: Offers fall detection while skiing.

• Smart Controls: Can control other Xiaomi smart devices via Xiaomi Smart Hub.

• Calls: Supports Bluetooth calling.

Battery and charging

• Battery Life: Up to 8 days of light usage, or about 4 days with normal usage.

• Charging: Uses a magnetic charger.

Other features

• Operating System: Runs on Xiaomi HyperOS 3.0.

• Customization: Offers over 200 watch faces through the Mi Fitness app.

• Sensors: Includes an ambient light sensor, compass, barometer, and a new T1 chip for efficiency.