1. Introduction
Thank you for choosing the Xiaomi Watch S1. This smart wearable device combines exquisite design with advanced technology to enhance your daily life, fitness, and health monitoring. Featuring a sapphire glass 1.43" AMOLED display, stainless steel case, and comprehensive health and fitness tracking capabilities, the Xiaomi Watch S1 is designed for both elegance and performance. This manual provides detailed instructions on how to set up, operate, and maintain your watch to ensure optimal performance and longevity.
2. Safety Information
Please read all safety instructions carefully before using the device. Failure to follow these instructions may result in injury, electric shock, fire, or damage to the device.
- Water Resistance: The Xiaomi Watch S1 has a 5ATM water resistance rating. This means it can be worn during swimming in pools or shallow waters, but it is not suitable for hot showers, saunas, or diving. Avoid direct contact with high-pressure water.
- Battery Safety: Do not attempt to replace the battery yourself. The battery is non-removable. Do not expose the device to extreme temperatures or direct sunlight for extended periods.
- Charging: Use only the original wireless charging dock provided with the watch. Ensure the charging contacts are clean and dry before charging.
- Medical Devices: If you have a pacemaker or other internal electronic medical device, consult your doctor before using this product. The watch contains magnets that may interfere with medical devices.
- Skin Irritation: If you experience skin irritation or discomfort after wearing the watch, discontinue use and consult a doctor.
- Disposal: Dispose of this device and its battery in accordance with local regulations. Do not dispose of it with household waste.
3. Package Contents
Verify that all items are present in your package:
- Xiaomi Watch S1 (with pre-installed leather strap)
- Fluororubber strap (additional)
- Wireless charging dock
- User Manual
4. Product Overview
Familiarize yourself with the components of your Xiaomi Watch S1.
4.1 Watch Components

Figure 4.1: Front View of Xiaomi Watch S1. This image displays the watch's elegant front, highlighting the 1.43" AMOLED display with sapphire glass, stainless steel frame, and a classic brown leather strap. The watch face shows digital time, step count, heart rate, and current temperature.

Figure 4.2: Side View of Xiaomi Watch S1. This image provides a clear view of the watch's side profile, showcasing the polished stainless steel case and the two physical buttons located on the right side, used for navigation and function access.

Figure 4.3: Back View of Xiaomi Watch S1. This image illustrates the rear of the watch, featuring the optical heart rate sensor in the center and the wireless charging contacts. The back casing also displays regulatory markings and the model number.

Figure 4.4: Xiaomi Watch S1 on Wrist. This image shows the Xiaomi Watch S1 being worn, providing a perspective on its size and aesthetic appeal when on the wrist. It highlights the watch's suitability for various occasions, from formal to casual.
- Display: 1.43" AMOLED touch display with sapphire glass.
- Buttons: Two physical buttons on the right side for navigation and quick access.
- Sensors: Optical heart rate sensor, Accelerometer, Gyroscope, Electronic compass, Barometer Sensor, Light Sensor, Cap sensor (located on the back).
- Microphone & Speaker: For Bluetooth phone calls and voice assistant.
- Charging Contacts: Located on the back for wireless charging.
4.2 Strap Installation and Removal
The Xiaomi Watch S1 comes with a pre-installed leather strap and an additional fluororubber strap. You can easily swap them to suit your style or activity.
- To Remove: Locate the quick-release pin on the underside of the strap where it connects to the watch body. Slide the pin inwards and gently pull the strap away from the watch.
- To Install: Align the new strap with the watch body. Insert one end of the quick-release pin into the corresponding hole on the watch lug. Slide the pin inwards, align the other end with the second hole, and release the pin. Tug gently on the strap to ensure it is securely fastened.
5. Setup
5.1 Charging the Watch
Before first use, fully charge your Xiaomi Watch S1.
- Connect the USB-A end of the wireless charging dock to a power adapter (5V/1A or higher recommended, not included).
- Place the back of your Xiaomi Watch S1 onto the charging dock. The watch will magnetically snap into place, and a charging icon will appear on the screen.
- Allow approximately 2.5 hours for a full charge.
5.2 Power On/Off
- Power On: Press and hold the upper physical button for a few seconds until the Xiaomi logo appears.
- Power Off: From the watch face, swipe down to access the quick settings panel, then tap the power icon. Alternatively, go to Settings > System > Power Off. Confirm your choice.
- Restart: If the watch is unresponsive, press and hold both physical buttons simultaneously for about 10-15 seconds until the watch restarts.
5.3 Pairing with Your Phone
To unlock the full potential of your Xiaomi Watch S1, pair it with the Mi Fitness (formerly Xiaomi Wear) app on your smartphone.
- Download the App: Search for "Mi Fitness" in the Google Play Store (for Android) or Apple App Store (for iOS) and install it.
- Create/Log In: Open the Mi Fitness app and log in with your Xiaomi account or create a new one.
- Add Device: In the app, navigate to the "Device" tab and tap "Add device" or the "+" icon. Select "Xiaomi Watch S1" from the list of available devices.
- Pairing Process: Follow the on-screen instructions in the app and on your watch. A pairing request will appear on your watch; tap to confirm. Ensure Bluetooth is enabled on your phone and the watch is nearby.
- Complete Setup: Once paired, the app will guide you through initial settings, such as personal information, notification preferences, and firmware updates.
6. Operating Instructions
6.1 Basic Navigation
- Touchscreen Gestures:
- Swipe Up: View notifications.
- Swipe Down: Access quick settings (e.g., DND, flashlight, battery saver).
- Swipe Left/Right: Cycle through widgets (e.g., heart rate, weather, activity data).
- Tap: Select an item or open an app.
- Tap and Hold: Change watch faces (from the watch face screen).
- Button Functions:
- Upper Button (Power/Menu):
- Press once: Return to watch face / Open app list.
- Press and hold: Power options (Power off, Restart).
- Lower Button (Shortcut/Sport):
- Press once: Default to open workout list. This can be customized in settings.
- Upper Button (Power/Menu):
6.2 Watch Faces
The Xiaomi Watch S1 offers over 200 watch faces. To change your watch face:
- On the watch face screen, tap and hold the display.
- Swipe left or right to browse through pre-installed watch faces. Tap to select.
- For more options, open the Mi Fitness app on your phone, go to the "Device" tab, and select "Watch faces" to download and sync new designs.
6.3 Fitness Tracking
The watch supports 117 fitness modes, including 19 professional modes.
- Starting a Workout:
- Press the lower physical button to quickly access the workout list.
- Select your desired activity (e.g., Outdoor Running, Cycling, Swimming).
- For outdoor activities, wait for GPS signal acquisition (indicated by a green icon) for accurate route tracking.
- Tap "GO" to start the workout.
- During Workout: Swipe left/right to view different data screens. Press the upper button to pause/resume, or tap and hold to end the workout.
- Dual-Band GPS: The watch utilizes dual-band positioning technology for faster and more accurate route tracking during outdoor activities.
6.4 Health Monitoring
The Xiaomi Watch S1 provides comprehensive all-day health monitoring.
- Heart Rate Monitoring: The watch continuously monitors your heart rate. View real-time data by swiping left/right to the heart rate widget or opening the Heart Rate app.
- SpO2 Monitoring: Measure your blood oxygen saturation. Open the SpO2 app on the watch and follow the instructions to take a measurement.
- Sleep Tracking: Wear the watch to bed for automatic sleep tracking. View sleep stages and quality analysis in the Mi Fitness app.
- Stress Monitoring: The watch can estimate your stress levels.
- Women's Health Tracking: Track menstrual cycles and receive predictions (requires setup in the Mi Fitness app).
6.5 Bluetooth Phone Calls
With the built-in microphone and speaker, you can answer calls directly from your watch when connected to your phone via Bluetooth.
- Ensure your watch is paired and connected to your phone via Bluetooth.
- When a call comes in, the watch will display the caller ID. Tap the green phone icon to answer or the red icon to decline.
- Speak directly into the watch. You can adjust the volume on the watch screen during a call.
6.6 NFC Payments
The Xiaomi Watch S1 supports contactless payments with MasterCard.
- Set up your MasterCard in the Mi Fitness app's NFC payment section. Follow the app's instructions for card registration and activation.
- To make a payment, open the Wallet app on your watch, select your card, and hold the watch near the payment terminal.
6.7 Voice Assistant (Alexa)
The watch has built-in Alexa. To use it:
- Ensure your watch is connected to your phone and has an active internet connection.
- Access Alexa by swiping right from the watch face or by a customizable button shortcut.
- Speak your commands, such as "What's the weather?", "Set a timer for 5 minutes," or "Control my smart lights."
6.8 Notifications
Receive notifications from your phone directly on your watch.
- Enable app notifications in the Mi Fitness app (Device > Notifications).
- Swipe up from the watch face to view your notification history.
7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your Xiaomi Watch S1.
- Cleaning the Watch:
- Wipe the watch screen and body with a soft, lint-free cloth. If necessary, dampen the cloth slightly with water.
- Do not use harsh chemicals, abrasive cleaners, or solvents.
- Regularly clean the back of the watch, especially the sensor area, to ensure accurate readings.
- Cleaning the Straps:
- Leather Strap: Wipe with a soft, dry cloth. Avoid prolonged exposure to water or direct sunlight. Do not use detergents.
- Fluororubber Strap: Can be rinsed with water and mild soap. Ensure it is completely dry before reattaching to the watch.
- Water Resistance Care:
- After swimming or exposure to water, gently wipe the watch dry with a soft cloth.
- Do not press buttons underwater.
- Avoid exposing the watch to hot water, steam, or high-pressure water jets.
- Storage: Store the watch in a cool, dry place when not in use. Avoid extreme temperatures.
8. Troubleshooting
If you encounter issues with your Xiaomi Watch S1, refer to the following common solutions:
| Problem | Possible Cause / Solution |
|---|---|
| Watch does not power on. | Battery may be depleted. Place the watch on the charging dock and ensure it is charging. If still unresponsive, try a forced restart (press and hold both buttons for 10-15 seconds). |
| Cannot pair with phone. |
|
| Inaccurate heart rate/SpO2 readings. |
|
| Short battery life. |
|
| Watch is frozen or unresponsive. | Perform a forced restart by pressing and holding both physical buttons for 10-15 seconds. |
| NFC payment not working. |
|
If the problem persists, consider performing a factory reset (Settings > System > Factory Reset) on your watch. Note that this will erase all data on the watch. For further assistance, contact Xiaomi customer support.
9. Specifications
| Product Name | Xiaomi Watch S1 |
| Model Number | M2112W1 |
| Display | 1.43" AMOLED, Sapphire Glass |
| Battery Capacity | 470 mAh |
| Battery Life | Up to 12 days (typical usage) |
| Charging Type | Wireless Charging |
| Water Resistance | 5ATM |
| Connectivity | Bluetooth, Dual-Band GPS, NFC |
| Sensors | Optical heart rate sensor, Accelerometer, Gyroscope, Electronic compass, Barometer Sensor, Light Sensor, Cap sensor |
| Dimensions | 1.83 x 1.83 x 0.43 inches (46.5 x 46.5 x 10.9 mm) |
| Weight | 1.83 ounces (52g approx. with strap) |
| Operating Temperature | 0°C to 45°C (32°F to 113°F) |
10. Warranty and Support
Xiaomi products are covered by a limited warranty. The terms and conditions of the warranty may vary by region. Please refer to the official Xiaomi website or your local retailer for specific warranty details applicable to your purchase.
For technical support, frequently asked questions, and additional resources, please visit the official Xiaomi support website:
You can also contact Xiaomi customer service through the Mi Fitness app or the contact information provided on the official website.





