Introduction
Thank you for choosing the AiMoonsa 64GB MP3 Player. This device is designed to provide a versatile and high-quality audio experience, featuring a built-in HD speaker, FM radio, voice recorder, and e-book functionality. With its upgraded Bluetooth 5.2, you can enjoy stable and fast connections to your audio devices. This manual will guide you through the setup, operation, and maintenance of your new MP3 player.

Figure 1: AiMoonsa 64GB MP3 Player and accessories.
The image displays the AiMoonsa 64GB MP3 Player in black, accompanied by a pair of white wired earphones and a 64GB micro SD card. The player itself is sleek with a screen and control buttons, highlighting its compact design.
Package Contents
Upon opening the package, please ensure all items are present:
- 1 x AiMoonsa MP3 Player (Model: B27)
- 1 x Wired Earphones
- 1 x 64GB TF Card (pre-installed or included separately)
- 1 x Card Reader
- 1 x Type-C Data Cable

Figure 2: AiMoonsa MP3 Player Retail Box.
This image shows the front of the retail packaging for the AiMoonsa MP3 Player, clearly displaying "B27 64GB MP3 Music Player" and an illustration of the device.

Figure 3: AiMoonsa MP3 Player Retail Box Back.
The back of the retail box is shown, detailing product information such as product name, brand, model, manufacturer, and warnings. A barcode with "X001I8WIJH" is visible, indicating a product identifier.
Setup
1. Charging the Device
Before first use, fully charge your MP3 player. Connect the provided Type-C data cable to the player's USB-C port and the other end to a USB power adapter (not included) or a computer's USB port. The charging indicator will show progress.
2. Inserting the TF Card
The 64GB TF card is typically pre-installed. If not, locate the TF card slot on the side of the player and gently insert the card until it clicks into place. Ensure the card is inserted correctly to avoid damage.

Figure 4: Massive 64GB Storage.
This image emphasizes the 64GB storage capacity of the MP3 player, showing the device alongside a micro SD card and icons indicating Bluetooth 5.2, HiFi lossless sound, and fast charging.
3. Transferring Music and Files
Connect the MP3 player to your computer using the Type-C data cable. The device will appear as a removable disk. You can drag and drop your music files (APE, FLAC, WMA, MP3, ACELP, etc.), e-books, and other supported files directly into the player's storage or the TF card. Alternatively, you can use the provided card reader to transfer files directly to the TF card.
Video 1: AiMoonsa MP3 Player Overview.
This video, provided by the seller, offers a general overview of the AiMoonsa MP3 player, demonstrating its physical features and basic navigation. It shows how to connect the device and highlights its compact size.

Figure 5: Supported Multiple Formats.
This graphic illustrates the various audio formats supported by the MP3 player, including WAV, APE, MP3, OGG, ACELP, AAC-LC, WMA, and FLAC, ensuring broad compatibility for your media library.
Operating Instructions
1. Power On/Off
Press and hold the power button on the side of the device for 3 seconds to turn it on or off. A short press will lock/unlock the screen.
2. Navigation
The MP3 player features touch-sensitive buttons for navigation. Use the arrow keys to move through menus and select options. The center button typically acts as a 'confirm' or 'play/pause' button, while the 'U' shaped button serves as a 'return' or 'back' key.

Figure 6: Multi-Function Player Layout.
This diagram illustrates the various buttons and ports on the AiMoonsa MP3 player, including the Type-C port, headphone plug, volume buttons, SD card slot, and power button, along with icons representing its functions like lossless music, Bluetooth 5.2, picture viewer, recorder, e-book, folder access, FM radio, and alarm.
3. Music Playback
From the main menu, select 'Music'. You can browse by 'All Songs', 'Last Played', 'Artists', 'Albums', or 'Favorites'. Select a song to begin playback. Use the left/right arrow keys for previous/next track, and the center button to play/pause. Volume can be adjusted using the dedicated volume buttons on the side.

Figure 7: HiFi Sound Quality.
A person is shown wearing headphones, highlighting the HiFi sound quality of the MP3 player, which is achieved through a DAC audio decoder chip, layer noise depth filter, and optimization for AMP amplification. It supports MP3, FLAC, APE, and WMA formats.
4. Bluetooth Connection
Navigate to 'Bluetooth' from the main menu. Turn on Bluetooth and search for available devices. Select your Bluetooth headphones or speaker from the list to pair. Once paired, audio will stream wirelessly to your connected device.

Figure 8: Upgraded Bluetooth 5.2.
This image demonstrates the upgraded Bluetooth 5.2 connectivity of the MP3 player, showing users connecting to both Bluetooth headphones and a Bluetooth speaker for a more stable and faster audio experience.
Video 2: MP3 Player B27 Features.
This seller-provided video showcases various features of the B27 MP3 player, including its compact design, screen interface, and the process of connecting accessories like earphones and the charging cable. It also briefly touches upon the memory card slot.
5. Other Functions
The MP3 player includes several other useful functions:
- FM Radio: Requires wired headphones to be plugged in as they act as the antenna.
- Voice Recorder: Access the recorder function to capture audio.
- E-Book: Read text files directly on the device.
- Alarm Clock: Set alarms for reminders.

Figure 9: Simple Recorder Function.
This image illustrates the voice recording capability of the MP3 player, showing it being used in both a learning environment and a conference setting, emphasizing its utility for capturing audio notes.

Figure 10: Multi-Function Player Use Cases.
This graphic showcases diverse applications of the multi-function MP3 player, including use during sports, as an alarm clock, for FM radio listening, e-book reading, recording, and as a suitable gift.
Maintenance
To ensure the longevity and optimal performance of your AiMoonsa MP3 player, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the device. Avoid liquid cleaners or abrasive materials.
- Storage: Store the player in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: Avoid fully discharging the battery frequently. Charge the device regularly, even if not in use, to maintain battery health.
- Software Updates: Check the official AiMoonsa website for any firmware updates that may improve performance or add features.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery; device frozen. | Charge the device. Press and hold the power button for 10 seconds to force restart. |
| Cannot transfer files. | Incorrect connection; driver issue; full storage. | Ensure proper cable connection. Try a different USB port or computer. Check available storage space. |
| Bluetooth connection unstable. | Distance from device; interference; incompatible device. | Keep devices within range (approx. 10 meters). Reduce interference. Ensure Bluetooth device is compatible. |
| Poor sound quality from built-in speaker. | Speaker limitations. | The built-in speaker is for convenience. For optimal sound, use wired or Bluetooth headphones. |
| FM Radio not working. | Headphones not plugged in. | Ensure wired headphones are securely plugged in, as they serve as the antenna. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | B27 |
| Product Dimensions | 3.6 x 1.7 x 0.35 inches |
| Item Weight | 5.6 ounces |
| Memory Storage Capacity | 64 GB (expandable up to 256GB via TF card) |
| Screen Size | 1.8 Inches |
| Connectivity Technology | Bluetooth 5.2 |
| Special Features | Built-In Speaker, Voice Recorder, FM Radio, E-Book, Alarm Clock, Touch Buttons with Backlight |
| Supported Audio Formats | APE, FLAC, WMA, MP3, ACELP, WAV, OGG, AAC-LC |
| Battery | 1 Lithium Ion battery (included, rechargeable) |
| Manufacturer | AiMoonsa |
Warranty and Support
AiMoonsa products come with a standard warranty. For specific warranty details and support inquiries, please refer to the contact information provided in your product packaging or visit the official AiMoonsa store on Amazon: AiMoonsa Store.
If you encounter any issues or have questions, please contact customer support for assistance.





