Introduction
The LDNIO SW03 Smart Watch is designed to provide comprehensive health monitoring, communication features, and fitness tracking. This manual provides instructions for setting up, operating, maintaining, and troubleshooting your device to ensure optimal performance and user experience.

Image: LDNIO SW03 Smart Watch displaying a floral watch face.
Getting Started
1. Charging the Device
Before initial use, fully charge your LDNIO SW03 Smart Watch. The device uses a magnetic charging method for convenience.
- Connect the magnetic charging cable to a standard USB power adapter (DC5V ≥ 500mA).
- Align the magnetic end of the cable with the charging contacts on the back of your smartwatch. The magnets will secure the connection.
- The watch display will indicate charging status. A full charge typically takes 2-3 hours.
2. Powering On/Off
- Power On: Long press the side button until the screen illuminates.
- Power Off: Navigate to the power off option in the watch settings or long press the side button and select 'Power Off' when prompted.
3. App Installation and Pairing
To unlock the full functionality of your smartwatch, install the DaFit app on your smartphone and pair the devices.
- Download the DaFit app from your smartphone's app store (compatible with Android 5.0+ and iOS 9.0+).
- Ensure Bluetooth is enabled on your smartphone.
- Open the DaFit app and follow the on-screen instructions to add your device. The app will search for available smartwatches.
- Select 'SW03' from the list of found devices to initiate pairing. Confirm the pairing request on both your watch and smartphone.
Operating Your Smart Watch
1. Display and Navigation
The LDNIO SW03 features a 1.19-inch AMOLED display with 390x390 resolution for clear visuals. Navigate the watch using touch gestures and the side button.
- Swipe Left/Right: Enter the main menu or return to the previous interface.
- Quickly Press Twice (Side Button): Switch freely between multiple menus or watch faces.
- Long Press (Side Button): Power on/off the device.

Image: Visual guide to the button functions: long press for power, quick double press for menu switching, and swipe for navigation.
2. Communication Features
Stay connected by making and receiving calls and texts directly from your wrist via Bluetooth V5.4 connection to your smartphone.
- Making Calls: Access the dialer or contact list on your watch to initiate calls.
- Receiving Calls: Answer or reject incoming calls directly from the watch display.
- Notifications: Receive notifications for messages, social media alerts, and other app updates.
3. Health and Fitness Tracking
The SW03 Smart Watch offers comprehensive monitoring capabilities to support your health and fitness goals.
- Heart Rate Monitoring: Continuously tracks your heart rate with off-hand detection.
- Sleep Analysis: Provides 24-hour sleep monitoring, analyzing sleep quality and patterns.

Image: The smartwatch screen showing sleep duration and analysis, worn by a user.
- Activity Tracking: Counts daily steps, calories burned, and distance covered.
- Exercise Modes: Supports multiple sports modes including running, cycling, and yoga.
- Women's Health Management: Features for scientifically recording and predicting menstrual periods and supporting pregnancy preparation.
4. Water Resistance
The LDNIO SW03 Smart Watch has an IP68 waterproof and dustproof rating, making it suitable for daily wear and various activities.
- It can withstand immersion in water up to 1.5 meters for up to 30 minutes.
- Suitable for swimming, showering, and exposure to rain.
- Avoid hot water, steam, or prolonged exposure to high-velocity water.

Image: The smartwatch on a user's wrist, partially submerged in water, demonstrating its water resistance.
5. Customization
Personalize your smartwatch experience with various watch faces and settings.
- Watch Faces: Choose from a selection of pre-installed watch faces or download more via the DaFit app.
- Settings: Adjust brightness, vibration, notification preferences, and other settings through the watch interface or the DaFit app.

Image: A collection of different watch faces and functional widgets available on the LDNIO SW03 Smart Watch.
Maintenance
1. Cleaning
- Wipe the watch screen and strap regularly with a soft, dry, lint-free cloth.
- For stubborn dirt, slightly dampen the cloth with water. Avoid using harsh chemicals or abrasive materials.
- Ensure the charging contacts are clean and dry before charging.
2. Battery Information
- The watch is powered by a 180mAh Polymer rechargeable lithium battery.
- Typical usage provides 5 to 10 days of battery life on a single charge, depending on usage patterns and enabled features.
- To prolong battery life, reduce screen brightness, limit notifications, and disable unnecessary features.
Troubleshooting
- Watch not powering on: Ensure the watch is fully charged. Connect it to the charger for at least 30 minutes.
- Unable to pair with smartphone: Make sure Bluetooth is enabled on both devices. Restart both the watch and the smartphone. Ensure the DaFit app is updated to the latest version.
- Inaccurate health data: Ensure the watch is worn snugly on your wrist, not too tight or too loose. Keep the sensor clean.
- Notifications not received: Check app permissions in your smartphone settings to ensure the DaFit app has access to notifications. Verify notification settings within the DaFit app.
Specifications

Image: Detailed specifications for the LDNIO SW03 Smart Watch, including hardware and battery parameters.
| Feature | Detail |
|---|---|
| Model | SW03 |
| Display | 1.19-inch AMOLED, 390×390 resolution |
| Memory (FLASH) | 128 MB |
| Heart Rate Detection | Dynamic heart rate + off-hand detection |
| Touch Screen | Full screen touch |
| Operating System Compatibility | iOS 9.0+, Android 5.0+, HarmonyOS 2.0+ |
| Motor | Flat motor |
| Waterproof Level | IP68 |
| Body Size (L x W x H) | 38.6 x 38.6 x 10.9 mm |
| Battery Capacity | 180mAh, 3.8V |
| Battery Type | Polymer rechargeable lithium battery |
| Charging Method | Magnetic charging |
| Input Current | DC5V ≥ 500mA |
| Charging Time | 2-3 hours |
| Connectivity Technology | Bluetooth V5.4 |
| Special Features | Fitness Monitoring, Call/Text Functionality |
Note: This product is not a medical equipment. The health data, results, and suggestions provided are for reference only and are not directly used as clinical diagnosis or medical basis.
Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact LDNIO customer service. Keep your proof of purchase for warranty claims.




