Xiaomi Watch S4 Black – a powerful smartwatch for fitness and wellbeing
The Xiaomi Watch S4 Black is a high-performance smartwatch that combines sleek black design, lightweight build and versatile health features. The 44.5 g aluminum alloy case features a polished PVD coating and includes a replaceable bezel along with a black fluororubber strap (140–210 mm).
The 1.43-inch AMOLED touchscreen delivers stunning clarity with HBM brightness up to 1500 nits and a 60 Hz refresh rate. The watch supports Bluetooth 5.3, NFC contactless payments (Mastercard & Visa*) and is compatible with the Xiaomi Smart Hub platform.
Powered by the fast and intuitive Xiaomi HyperOS 2, the interface includes a rotating crown and gesture controls. The watch face is easy to personalize thanks to interchangeable bezels. It also supports Bezel & Strap Kit options like Dual-Tone Ceramic (blue-gray), Pine Green, Midnight Carbon, Festive Orange and Liquid Silver.
Monitor your heart rate, stress level, blood oxygen and sleep with a single tap. The device includes new breathing exercises and a micro-physiological report generated in about 60 seconds. Thanks to the 12-channel sensor and proprietary heart rate algorithm, accuracy reaches up to 98%.
The watch supports over 150 sports modes and dual-frequency (L1+L5) GNSS with five satellite systems (GPS, Galileo, Glonass, BeiDou, QZSS). It includes running coaching, form analysis, ski mode and fall detection. Workout results sync with the Mi Fitness app, and compatibility with Health Connect, Strava and Suunto adds flexibility.
You can also control Xiaomi Home devices, take remote photos, find your phone or manage earbuds. New gesture controls allow rejecting calls, opening weather or snapping a photo with a finger tap.
Up to 15 days of battery life
Enjoy up to 15 days of usage on a single charge – perfect for trips without your charger. A quick 5-minute charge delivers up to 2 days of battery life. Recharge while you shower or brush your teeth.
Key features:
- 1.43” AMOLED display (HBM brightness up to 1500 nits)
- Interchangeable bezel design and rotating crown
- Xiaomi HyperOS 2 and Bluetooth 5.3
- 24/7 heart rate, SpO₂, stress and sleep monitoring
- Accelerometer, gyroscope, ambient light, compass, barometer and Hall sensors
- 150+ sports modes, GNSS tracking, running coach
- NFC contactless payments (Mastercard & Visa*)
- Compatible with Android 6.0+ and iOS 12.0+
Specifications:
- Display: 1.43” AMOLED, 466 x 466 px
- Dimensions: 47.3 x 47.3 x 12 mm
- Case: black PVD-coated aluminum alloy
- Strap: black fluororubber (140–210 mm)
- Weight: 44.5 g (excluding strap)
- Operating system: Xiaomi HyperOS 2
- Battery: 486 mAh, up to 15 days
- GNSS: GPS, Galileo, Glonass, BeiDou, QZSS
- Bluetooth calls: yes
- Speaker: yes
- Water resistance: 5 ATM
Package includes: Xiaomi Watch S4 Black (with bezel and strap), magnetic charging dock and user manual (incl. warranty info).
*Contactless payment works only with supported cards. Check the manufacturer’s website for compatible banks.
