Xiaomi Watch S4 41mm
The Xiaomi Watch S4 41mm is designed for users who want a stylish compact smartwatch with a bright AMOLED display, stainless steel frame, built-in GNSS, Bluetooth calling, health sensors, fitness tracking, and Xiaomi HyperOS 3. With its slim 41mm design, 1.32-inch AMOLED screen, 5ATM water resistance, Bluetooth 5.4, up to 8 days of light usage battery life, and Android/iOS compatibility, it is a strong choice for daily wear, workouts, calls, notifications, and smart lifestyle tracking.
Key Features
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Compact 41mm Design
Smaller and lighter than larger smartwatch models, making it comfortable for daily wear and smaller wrists.
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Stainless Steel Frame
Gives the watch a more premium and durable look compared to basic plastic-framed wearables.
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1.32-Inch AMOLED Display
Bright AMOLED screen with 466 × 466 resolution, 352 PPI, and 60Hz refresh rate for clear visuals.
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1500-Nit HBM Brightness
High brightness helps improve outdoor visibility in bright conditions.
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Built-In GNSS
Supports GPS, Galileo, Glonass, BeiDou, and QZSS for outdoor activity tracking.
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Bluetooth Calling
Built-in speaker and microphone allow Bluetooth calls when connected to a smartphone.
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Health Monitoring Sensors
Includes heart rate sensor with blood oxygen sensor, temperature sensor, barometer, compass, accelerometer, gyroscope, and ambient light sensor.
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Up to 8 Days Battery Life
Offers up to 8 days with light usage, up to 4 days with normal usage, and up to 3 days with heavy usage.
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5ATM Water Resistance
Suitable for pool swimming, swimming near shore, and shallow-water activities.
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Xiaomi HyperOS 3
Runs on Xiaomi HyperOS 3 for a smoother smartwatch interface and ecosystem experience.
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Bluetooth 5.4 Connectivity
Supports stable wireless connection with compatible smartphones.
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Magnetic Charging Dock
Uses a 2-pin magnetic charging dock for easy charging.
Technical Specifications
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Product Type: Smartwatch
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Brand: Xiaomi
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Model: Xiaomi Watch S4 41mm
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Dimensions: 41.2 × 41.2 × 9.5mm, excluding strap and protrusions
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Weight: Approx. 32g without inbox strap
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Frame Material: Stainless steel
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Display: 1.32-inch AMOLED
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Resolution: 466 × 466 pixels
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Pixel Density: 352 PPI
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Refresh Rate: 60Hz
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Brightness: HBM 1500 nits
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Battery Capacity: 320mAh
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Light Usage Battery Life: Up to 8 days
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Normal Usage Battery Life: Up to 4 days
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Heavy Usage Battery Life: Up to 3 days
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Wireless Connectivity: Bluetooth 5.4
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Operating System: Xiaomi HyperOS 3
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Built-In GNSS: Supported
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Satellite Positioning: GPS, Galileo, Glonass, BeiDou, QZSS
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Water Resistance: 5ATM
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Speaker: Supported
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Microphone: 1 microphone
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Bluetooth Calling: Supported
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Charging Port: 2-pin magnetic charging dock
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Compatible System: Android 8.0 and above, iOS 14.0 and above
Sensors
- Heart rate sensor with blood oxygen sensor
- Accelerometer
- Gyroscope
- Ambient light sensor
- Electronic compass
- Barometer sensor
- Temperature sensor
Battery Life & Charging
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Battery Capacity: 320mAh
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Light Usage: Up to 8 days
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Normal Usage: Up to 4 days
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Heavy Usage: Up to 3 days
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Charging Method: 2-pin magnetic charging dock
- Actual battery life depends on screen brightness, always-on display use, Bluetooth calling, workout tracking, GNSS usage, notifications, and selected watch settings.
Bluetooth Version
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Bluetooth Version: Bluetooth 5.4
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Bluetooth Calling: Supported
- The watch must remain connected to the smartphone’s Bluetooth for Bluetooth calling. Voice calls from third-party apps are not currently supported.
Waterproof / Water Resistance
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Water Resistance Rating: 5ATM
- Suitable for swimming pools, swimming near shore, and other shallow-water activities.
- Not suitable for hot showers, saunas, or diving. Avoid direct impact from swift currents during water sports. Water resistance is not permanent and may deteriorate over time.
Strap Options
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Black: Fluororubber strap, adjustable length approx. 120–190mm
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Mint Green: Fluororubber strap, adjustable length approx. 120–190mm
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White: Leather strap, adjustable length approx. 120–190mm
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Sunset Gold: Milanese strap, adjustable length approx. 130–190mm
Best Use Cases
- Daily smartwatch wear
- Fitness and workout tracking
- Outdoor walking and running
- Heart rate and blood oxygen tracking
- Bluetooth calling
- Smartphone notifications
- Sleep and lifestyle tracking
- Swimming and shallow-water activities
- Users who prefer a compact 41mm watch
- Users who want a stylish watch with stainless steel design
Compatibility
- Compatible with Android 8.0 and above
- Compatible with iOS 14.0 and above
- Works with compatible smartphones through Xiaomi’s wearable app ecosystem
- Some features may vary depending on phone model, operating system, app version, region, and permissions.
What’s in the Box
- Xiaomi Watch S4 41mm × 1
- Magnetic Charging Dock × 1
- User Manual × 1
