1. Product Overview
The Welaso 21-inch LCD Video Advertising Backpack is a versatile and portable digital display solution. It features a customized 21.5-inch LCD touch screen with a 1920x1080 resolution, running on an Android system. This backpack is designed for displaying various media formats including MP4, MPG, RMVB, AVI, MOV, and FLV videos, as well as images and text. Its robust design includes adjustable shoulder straps, a comfortable handle, anti-scratch features, and a password lock for security.
The backpack is equipped with a built-in 8000mAh rechargeable lithium battery, providing 2-3 hours of operation on a full charge. An external USB port facilitates convenient content updates.
Figure 1: Welaso 21-inch LCD Video Advertising Backpack.
2. Setup and Initial Use
2.1 Unboxing the Backpack
Upon receiving your Welaso LCD backpack, carefully open the packaging. The box is designed with a special honeycomb structure for protection. Locate the "OPEN" tags on the box and cut along the indicated borders to access the contents.
Video 1: Unboxing and initial handling of the LCD backpack.
2.2 Charging the Battery
The backpack contains a built-in 8000mAh rechargeable lithium battery. Before first use, ensure the battery is fully charged. The backpack can operate for 2-3 hours on a full charge.
2.3 Loading Content
Content can be loaded onto the backpack via its external USB port. The Android system supports various video formats (MP4, MPG, RMVB, AVI, MOV, FLV), images, and text files. Connect a USB drive containing your media files to the external USB interface for easy transfer.
Figure 2: Diagram showing system features and available ports, including USB.
3. Operating the Backpack
3.1 Powering On and Off
To power on the backpack, locate the power button, typically on the side or bottom of the screen unit. Press and hold until the screen illuminates. To power off, press and hold the power button again until the screen shuts down.
3.2 Navigating the Android System
The backpack operates on an Android system with a touch screen interface. Navigate through menus and applications by tapping and swiping on the screen, similar to a tablet device.
Figure 3: Close-up of the LCD touch screen in use.
3.3 Displaying Content
The backpack can display videos, images, and text. Utilize the pre-installed media player applications to select and play your desired content. The screen supports various display modes, including two-split, three-split, and quad-split screens for dynamic presentations.
Figure 4: Examples of mobile ad playback with various split-screen configurations.
Video 2: Demonstration of the backpack displaying various advertising content while being worn.
3.4 Using the Whiteboard Function
The backpack includes a whiteboard function, allowing for real-time drawing and writing directly on the touch screen. This feature is useful for interactive presentations or quick notes.
Video 3: Guide on how to use the whiteboard function on the LCD backpack.
4. Maintenance
To ensure the longevity and optimal performance of your Welaso LCD backpack, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the screen and backpack exterior. Avoid abrasive materials or harsh chemicals.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge it regularly, even when not in use for extended periods.
- Storage: Store the backpack in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Resistance: IMPORTANT: This product is not waterproof. It is recommended not to use it outdoors when it rains to avoid damage to the equipment.
Figure 5: Feature overview highlighting key specifications and the non-waterproof warning.
5. Troubleshooting
If you encounter issues with your Welaso LCD backpack, consider the following common solutions:
- Screen Not Turning On: Ensure the battery is charged. Connect the backpack to a power source and try again.
- Content Not Playing: Verify that the media files are in a supported format (MP4, MPG, RMVB, AVI, MOV, FLV for video). Check the USB connection if loading from an external drive.
- Touch Screen Unresponsive: Restart the device. Ensure the screen is clean and free of debris.
- Short Battery Life: Ensure the battery is fully charged before use. Operating in high brightness settings or extreme temperatures can reduce battery life.
For persistent issues or technical support, please refer to the contact information in the Warranty and Support section.
6. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 21.6 x 7.5 x 13.4 inches |
| Item Weight | 8.3 pounds |
| Screen Size | 21.5 inches |
| Resolution | 1920 x 1080 (Full HD) |
| Operating System | Android |
| Battery Capacity | 8000mAh Lithium Polymer (included) |
| Working Duration | 2-3 hours (fully charged) |
| Connectivity | Wi-Fi 2.4GHz, Bluetooth |
| Manufacturer | JiaTeAn |
7. Warranty and Support
For product support or inquiries regarding bulk orders and customization, please contact Welaso directly. You can leave a message via Amazon or reach out using the provided contact number.
- Contact Number (US): +1 719 2701065
- User Guide (PDF): For a comprehensive guide, please refer to the official User Guide PDF.
If repair service is needed, please contact support before returning the product, as different products may be directed to different repair locations.
