Introduction
This manual provides detailed instructions for the FOSA 2.7 Inch MP3 Player, Model fosadu4qsmbokr. It covers product features, setup, operation, maintenance, and troubleshooting to ensure optimal use of your device. Please read this manual thoroughly before using the product.
Package Contents
Verify that all items are present in your package:
- FOSA 2.7 Inch MP3 Player
- USB Type-C Charging Cable
- User Manual (this document)

Image: The FOSA MP3 Player shown alongside its included USB Type-C charging cable.
Product Overview
The FOSA MP3 Player features a 2.7-inch ink screen display and a compact design. Familiarize yourself with the device's physical components and controls.

Image: A close-up side view of the FOSA MP3 Player, highlighting its physical buttons and ports, including the power button, volume controls, and USB-C port.
Key Features:
- 2.7-inch Ink Screen: Provides a clear, eye-friendly display with reduced blue light and flicker, mimicking paper for comfortable reading.
- Multi-functional: Supports music playback, e-book reading, and an electronic dictionary.
- HiFi Sound Quality: Compatible with earphones, speakers, and Bluetooth devices for diverse audio experiences.
- Bluetooth 5.0: For wireless audio connectivity.
- USB Type-C Charging: For convenient and fast charging.
- Lightweight and Portable: Designed for easy carrying.
Setup
1. Charging the Device
Before first use, fully charge the MP3 player. Connect the included USB Type-C cable to the device's charging port and the other end to a USB power adapter (not included) or a computer's USB port.

Image: The FOSA MP3 Player with a USB Type-C cable inserted into its charging port, illustrating the charging process.
2. Inserting a Memory Card
The device supports external SD cards up to 128GB (not included). Locate the SD card slot on the side of the device and gently insert the memory card until it clicks into place. Ensure the device is powered off before inserting or removing the card.
3. Powering On/Off
To power on or off the device, press and hold the power switch located on the side of the player until the screen activates or deactivates.

Image: A visual guide demonstrating the basic operation of the FOSA MP3 Player, including instructions for power on/off, navigation, and volume control.
Operating Instructions
1. Navigation
The device features a full touch screen for navigation. After turning on, use the circular switch at the bottom of the screen to go back to the previous menu. Swipe gestures are used for other navigation.
2. Music Playback
From the main menu, select the "Music" icon. You can browse your music library by artist, album, or song. The player supports MP3, FLAC, WAV, APE, and WMA formats. Use the volume switch on the side to adjust audio levels.

Image: The FOSA MP3 Player screen showing the music playback interface with track information and control buttons.
3. E-Book Reading
Select the "E-Book" icon from the main menu. The player supports TXT format e-books. The ink screen technology provides a comfortable reading experience, similar to paper, and the backlight can be adjusted or turned off.

Image: The FOSA MP3 Player screen displaying an e-book page, demonstrating its reading functionality.
4. Bluetooth Connection
To connect to Bluetooth headphones or speakers, go to the settings menu, select "Bluetooth," and turn it on. The device will scan for available Bluetooth devices. Select your desired device from the list to pair.
5. File Transfer
Connect the MP3 player to your computer using the USB Type-C cable. The device will appear as a removable storage drive. You can then drag and drop music files, e-books, and other supported media directly onto the device's internal storage or inserted SD card.
6. Standby Mode and Unlock
To put the screen on standby, briefly press the power switch. Press it again to unlock the screen and resume operation.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or aerosols.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
- Avoid Impacts: Protect the device from drops and impacts, which can damage the screen or internal components.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery or device frozen. | Charge the device for at least 30 minutes. If still unresponsive, press and hold the power button for 10-15 seconds to force a restart. |
| Cannot connect via Bluetooth. | Bluetooth is off, device is out of range, or pairing issue. | Ensure Bluetooth is enabled on both devices. Move the devices closer. Try unpairing and re-pairing the device. |
| Music files not playing. | Unsupported file format or corrupted file. | Ensure files are in a supported format (MP3, FLAC, WAV, APE, WMA). Try playing a different file. |
| Screen is unresponsive. | Temporary software glitch. | Restart the device by holding the power button. |
Specifications
| Feature | Detail |
|---|---|
| Brand | FOSA |
| Model Name | fosadu4qsmbokr |
| Screen Size | 2.7 Inches |
| Display Technology | E Ink |
| Connectivity | Bluetooth 5.0, USB Type-C |
| Supported Audio Formats | MP3, FLAC, WAV, APE, WMA |
| Supported E-Book Format | TXT |
| Memory Type | SD Card (supports up to 128GB, not included) |
| Battery Type | Built-in 400mAh Lithium Polymer Battery |
| Included Components | Charging Cable |

Image: The FOSA MP3 Player displayed next to a list of its key specifications, including screen size, storage, Bluetooth version, and battery type.
Warranty and Support
For warranty information and technical support, please refer to the contact details provided by your retailer or visit the official FOSA website. Keep your purchase receipt as proof of purchase for warranty claims.

