Xiaomi Watch S4 41mm

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

• Compact 41mm Design
  Smaller and lighter than larger smartwatch models, making it comfortable for daily wear and smaller wrists.
• Stainless Steel Frame
  Gives the watch a more premium and durable look compared to basic plastic-framed wearables.
• 1.32-Inch AMOLED Display
  Bright AMOLED screen with 466 × 466 resolution, 352 PPI, and 60Hz refresh rate for clear visuals.
• 1500-Nit HBM Brightness
  High brightness helps improve outdoor visibility in bright conditions.
• Built-In GNSS
  Supports GPS, Galileo, Glonass, BeiDou, and QZSS for outdoor activity tracking.
• Bluetooth Calling
  Built-in speaker and microphone allow Bluetooth calls when connected to a smartphone.
• Health Monitoring Sensors
  Includes heart rate sensor with blood oxygen sensor, temperature sensor, barometer, compass, accelerometer, gyroscope, and ambient light sensor.
• 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.
• 5ATM Water Resistance
  Suitable for pool swimming, swimming near shore, and shallow-water activities.
• Xiaomi HyperOS 3
  Runs on Xiaomi HyperOS 3 for a smoother smartwatch interface and ecosystem experience.
• Bluetooth 5.4 Connectivity
  Supports stable wireless connection with compatible smartphones.
• Magnetic Charging Dock
  Uses a 2-pin magnetic charging dock for easy charging.

Technical Specifications

• Product Type: Smartwatch
• Brand: Xiaomi
• Model: Xiaomi Watch S4 41mm
• Dimensions: 41.2 × 41.2 × 9.5mm, excluding strap and protrusions
• Weight: Approx. 32g without inbox strap
• Frame Material: Stainless steel
• Display: 1.32-inch AMOLED
• Resolution: 466 × 466 pixels
• Pixel Density: 352 PPI
• Refresh Rate: 60Hz
• Brightness: HBM 1500 nits
• Battery Capacity: 320mAh
• Light Usage Battery Life: Up to 8 days
• Normal Usage Battery Life: Up to 4 days
• Heavy Usage Battery Life: Up to 3 days
• Wireless Connectivity: Bluetooth 5.4
• Operating System: Xiaomi HyperOS 3
• Built-In GNSS: Supported
• Satellite Positioning: GPS, Galileo, Glonass, BeiDou, QZSS
• Water Resistance: 5ATM
• Speaker: Supported
• Microphone: 1 microphone
• Bluetooth Calling: Supported
• Charging Port: 2-pin magnetic charging dock
• 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

• Battery Capacity: 320mAh
• Light Usage: Up to 8 days
• Normal Usage: Up to 4 days
• Heavy Usage: Up to 3 days
• 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

• Bluetooth Version: Bluetooth 5.4
• 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

• 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

• Black: Fluororubber strap, adjustable length approx. 120–190mm
• Mint Green: Fluororubber strap, adjustable length approx. 120–190mm
• White: Leather strap, adjustable length approx. 120–190mm
• 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