1. Introduction
Welcome to the ECHO RAINBOW Smartwatch user manual. This guide provides essential information for setting up, operating, and maintaining your new smartwatch. The ECHO RAINBOW Smartwatch is designed to enhance your active lifestyle with integrated sports functions, health sensors, and seamless smartphone connectivity.
What's in the Box
- ECHO RAINBOW Smartwatch
- Charging Cable
- User Manual

Image: The ECHO RAINBOW Smartwatch worn on a wrist, showing the time, date, and activity tracking data on its display.
2. Setup Guide
2.1 Initial Charging
Before first use, fully charge your ECHO RAINBOW Smartwatch.
- Connect the charging cable to the charging port on the back of the smartwatch.
- Plug the USB end of the cable into a standard USB power adapter (not included) or a computer's USB port.
- The watch display will indicate charging status. Allow approximately 2 hours for a full charge.
2.2 Pairing with Your Smartphone
To unlock all features, pair your smartwatch with the DaFit application on your smartphone.
- Download the DaFit application from the Google Play Store (for Android 4.4 and above) or Apple App Store (for iOS 8.0 and above).
- Ensure Bluetooth is enabled on your smartphone.
- Open the DaFit app and follow the on-screen instructions to add your device.
- Select "ECHO RAINBOW" from the list of available devices to complete the pairing process.

Image: The ECHO RAINBOW Smartwatch positioned beside a smartphone, illustrating the connection with the DaFit mobile application.
3. Operating Your Smartwatch
3.1 Navigating the Interface
The ECHO RAINBOW Smartwatch features a 1.69-inch rectangular TFT touchscreen.
- Swipe Up/Down: Scroll through menus and notifications.
- Swipe Left/Right: Access quick widgets or different watch faces.
- Tap: Select an item or confirm an action.
- Press Side Button: Return to the home screen or power on/off.
3.2 Health Monitoring
Utilize the advanced health sensors for comprehensive tracking.
- Heart Rate: Tap the heart rate icon to measure your current heart rate. Continuous monitoring can be enabled in the DaFit app.
- Blood Pressure: Access the blood pressure function to take a reading.
- Sleep Tracking: Wear the watch during sleep for automatic sleep analysis, including deep sleep and light sleep duration. View detailed reports in the DaFit app.
- Calorie Tracking: The watch automatically tracks calories burned based on your activity.
3.3 Sports Functions
Engage in various sports modes to track your physical activity.
- Pedometer: Automatically counts your steps throughout the day.
- Distance Tracking: Records the distance covered during your activities.
- Multiple Exercise Modes: Select from various sports modes like outdoor running, cycling, rope skipping, badminton, tennis, mountaineering, walking, basketball, and volleyball to get specific workout data.
3.4 Smart Connectivity
Stay connected with your smartphone for real-time notifications and controls.
- Notifications: Receive messages, call alerts, and app notifications directly on your watch. Configure notification settings in the DaFit app.
- Weather: View current weather conditions and forecasts.
- Music Control: Control music playback on your smartphone (play, pause, skip tracks).
- Camera Control: Use your watch as a remote shutter for your smartphone camera.
- Customizable Watch Faces: Personalize the watch face and display settings via the DaFit app.

Image: The ECHO RAINBOW Smartwatch worn on a wrist, showing the time, date, and activity tracking data on its display.
4. Key Features
- Advanced Health Sensors: Accurately measure calories, blood pressure, and heart rate. Benefit from in-depth sleep tracking and analysis for optimized well-being.
- Integrated Sports Functions: Use the pedometer to count steps, track distance, and engage in various exercises to achieve your fitness goals.
- Smart Connectivity: Receive messages, check weather, control music and smartphone camera, and customize your watch face and display settings.
- Bluetooth Connectivity: Easily connect your watch to your smartphone via Bluetooth for a smooth user experience.
- 1.69-inch Rectangular TFT Touchscreen: Enjoy a high-quality touchscreen with a 240*280 pixel resolution, offering a clear and responsive visual experience.

Image: A display of three ECHO RAINBOW Smartwatches, each featuring a different color strap and watch face, highlighting the product's design versatility.
5. Specifications
| Brand | ECHO |
| Model Number | 3662515021580 |
| Color | Shark Black |
| Operating System | Proprietary (DaFit App compatible with Android 4.4+ & iOS 8.0+) |
| Screen | 1.69-inch TFT Touchscreen, 240*280 pixels |
| Connectivity | Bluetooth (2.4 GHz radio frequency) |
| Special Features | DaFit App, Metallic casing, Fashion & design, Health and sport tracking |
| Compatible Devices | Smartphone |
| Battery Type | Lithium-polymer |
| Rechargeable Battery | Yes |
| Battery Capacity | 180 mAh (approximate) |
| GPS | Via smartphone |
| Shape | Rectangular |
6. Maintenance
6.1 Cleaning Your Smartwatch
To ensure accurate readings and prolong the life of your device, keep your smartwatch clean.
- Wipe the screen and body with a soft, lint-free cloth.
- For stubborn spots, slightly dampen the cloth with water. Avoid using harsh chemicals or abrasive materials.
- Clean the sensor area on the back of the watch regularly to maintain optimal performance.
6.2 Battery Care
- Avoid fully discharging the battery frequently.
- Charge the watch using the provided charging cable.
- Do not expose the watch to extreme temperatures, as this can affect battery life.
7. Troubleshooting
7.1 Watch Not Turning On
- Ensure the watch is fully charged. Connect it to the charger for at least 30 minutes.
- Press and hold the side button for 10-15 seconds to perform a forced restart.
7.2 Pairing Issues
- Make sure Bluetooth is enabled on your smartphone and the watch is within range.
- Restart both your smartphone and the smartwatch.
- Ensure the DaFit app is updated to the latest version.
- If previously paired, try unpairing the device from your phone's Bluetooth settings and then re-pairing through the DaFit app.
7.3 Inaccurate Health Readings
- Ensure the watch is worn snugly on your wrist, not too tight or too loose.
- Clean the sensor on the back of the watch.
- Avoid excessive movement during measurements.
- Note that smartwatches are not medical devices and readings are for reference only.
8. Warranty and Support
8.1 Manufacturer Warranty
The ECHO RAINBOW Smartwatch comes with a 2-year manufacturer warranty. Please retain your proof of purchase for warranty claims.
8.2 Customer Support
For further assistance, technical support, or warranty inquiries, please contact ECHO customer service through the official website or your retailer.





