Xiaomi Watch S4 BT Calling Smart Watch
The Xiaomi Watch S4 is a next-generation smartwatch that combines elegant design with cutting-edge technology. Featuring a 47mm aluminum alloy frame with interchangeable bezels, it delivers both durability and style for everyday wear. Its 1.43-inch AMOLED display with up to 2200 nits brightness ensures exceptional clarity, even under direct sunlight.
Key Features:
- Premium 47mm smartwatch with aluminum alloy frame and interchangeable bezels
- 1.43-inch AMOLED display with up to 2200 nits peak brightness for crystal-clear visibility
- 24/7 heart rate, SpO2, stress, and sleep tracking for continuous wellness monitoring
- Dual-frequency GNSS with GPS, Galileo, GLONASS, BeiDou, and QZSS support
- Over 150 sports modes including ski-specific coaching and fall detection
- 60-second health report and guided breathing exercises for quick check-ins
- 15-day battery life with 5-minute fast charge for 2-day use
- Moisture-resistant touchscreen to prevent water-triggered input errors
- Supports NFC payments (Mastercard and Visa, region-dependent)
- Bluetooth 5.3 with call functionality via smartphone
- Speaker and dual microphones for clear audio performance
- Xiaomi HyperOS 2 compatible with Android 8.0+ and iOS 14.0+
- Xiaomi Smart Hub integration and third-party app sync with Strava, Suunto, and Health Connect
- Remote camera control, gesture commands, and Find My Phone feature
- 5ATM water resistance suitable for swimming (not for diving or high-pressure environments)
Technical Specifications:
- Dimensions: 47.3mm × 47.3mm × 12.0mm (excluding strap)
- Weight: Approximately 44.5g (without strap)
- Strap Options: Fluororubber or Nylon blends, 135–210mm adjustable
- Display: 466 × 466 resolution at 326 PPI, 60Hz refresh rate
- Sensors: Heart rate, SpO2, gyroscope, barometer, compass, accelerometer, light sensor, Hall sensor
- Battery: 486mAh lithium-ion, magnetic charging dock
- In the Box: Xiaomi Watch S4 (with bezel and strap), magnetic charger, user manual, warranty card
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