Introduction
This manual provides detailed instructions for the safe and efficient use of your Diyeeni Portable MP3/MP4 Player. Please read this manual thoroughly before operating the device and retain it for future reference.

Image: Front view of the Diyeeni Portable MP3/MP4 Player, showcasing its screen and control buttons.
What's in the Box
Upon unpacking, please ensure all items listed below are present:
- Diyeeni MP4 Player
- Charging Cable
- Earphones

Image: The Diyeeni MP3/MP4 Player displayed alongside its charging cable and earphones.
Product Overview
Familiarize yourself with the device's physical components:

Image: Side view of the player, showing its slim profile.

Image: Bottom view of the player, highlighting the earphone jack and charging port.

Image: Close-up of the circular control wheel with Menu, Volume, and navigation buttons.
The player features a 1.8-inch HD screen, a circular control wheel for navigation, and dedicated ports for charging and earphones.
Setup
1. Charging the Device
Before first use, fully charge the player. Connect the provided charging cable to the player's charging port and the other end to a USB power source (e.g., computer, USB wall adapter). A full charge takes approximately 2 hours.

Image: The MP3/MP4 player connected via USB cable to a laptop, indicating charging.
2. Inserting a Memory Card
The player supports up to 64GB Micro SD memory cards (not included). Locate the memory card slot on the device. Gently insert the Micro SD card until it clicks into place. Ensure the card is inserted correctly to avoid damage.

Image: The MP3/MP4 player shown next to a 64GB Micro SD card, illustrating memory expansion capability.
3. Connecting Earphones
Plug the included earphones (or your preferred 3.5mm earphones) into the earphone jack located on the device.
4. Transferring Music and Files
Connect the player to your computer using the charging cable. The device should appear as a removable disk. Drag and drop your music (MP3, WMA, FLAC, APE, AAC, OGG, ACELP) and video files into the appropriate folders on the player's memory card.
Operating Instructions
1. Power On/Off
To power on, press and hold the power button (location may vary, typically on the side or top). To power off, press and hold the power button again until the screen turns off.
2. Basic Navigation
Use the circular control wheel:
- MENU: Access the main menu or go back to the previous screen.
- VOL (Up/Down): Adjust volume levels.
- Left/Right Arrows: Navigate through menu options, skip tracks, or fast forward/rewind during playback.
- Center Button: Select an option or play/pause media.
3. Music Playback
From the main menu, select "Music". Browse your files and select a song to play. The player supports playlists, random play, and playback options. It offers lossless sound quality for supported formats.

Image: The MP3/MP4 player screen showing a music equalizer display during audio playback.
4. Video Playback
Select "Video" from the main menu. Choose a video file to begin playback. Ensure video files are in a compatible format for optimal performance.

Image: The MP3/MP4 player screen showing a video playing, demonstrating its video playback feature.
5. Other Functions
- A-B Repeat: For language learning or specific section repetition.
- Lyrics Synchronization: Display lyrics during music playback (if supported by the file).
- Image View: Browse stored image files.
- Voice Recording: Utilize the built-in microphone for voice recordings.
- Sleep Shutdown: Set a timer for the device to automatically power off.
Maintenance
1. Cleaning
Wipe the device with a soft, dry cloth. Avoid using liquid cleaners or abrasive materials, which can damage the screen or finish.
2. Storage
Store the player in a cool, dry place away from direct sunlight and extreme temperatures. Protect it from dust and moisture.
3. Battery Care
To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery; device frozen. | Charge the device for at least 30 minutes. If still unresponsive, try a hard reset (refer to product documentation for specific reset instructions, if available). |
| No sound from earphones. | Earphones not properly connected; volume too low; faulty earphones. | Ensure earphones are fully plugged in. Increase volume. Test with another pair of earphones. |
| Cannot transfer files. | Incorrect USB connection; driver issue; full memory. | Reconnect the USB cable. Try a different USB port or computer. Check available memory space on the Micro SD card. |
| Player freezes or crashes. | Software error; corrupted file. | Perform a soft reset by holding the power button until it restarts. If issues persist, consider formatting the memory card (backing up data first). |
Specifications
| Brand | Diyeeni |
| Model Number | Diyeenics6fdhe45t1421-14 |
| Screen Size | 1.8 Inches |
| Display Technology | LED |
| Memory Storage Capacity | Up to 64 GB (Micro SD card, not included) |
| Supported Audio Formats | MP3, WMA, FLAC, APE, AAC, OGG, ACELP |
| Connectivity Technology | Aux (3.5mm headphone jack) |
| Battery Life (Audio Playback) | Up to 8 Hours |
| Charging Time | Approximately 2 Hours |
| Item Weight | 71 Grams |
| Dimensions (D x W x H) | 1.6" x 0.4" x 3.54" |
| Material | Aluminum Alloy |
| Included Components | MP4 Player, Charging Cable, Earphone |
Warranty and Support
For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact Diyeeni customer service through their official channels. Keep your purchase receipt as proof of purchase.
For further assistance, you may visit the Diyeeni Store on Amazon.