1. Introduction
This manual provides essential instructions for the safe and efficient use of your YUEHISY MP3 Music Player. Please read this manual thoroughly before operating the device and retain it for future reference.
2. Package Contents
Verify that all items listed below are present in your product package:
- 1 x YUEHISY MP3 Music Player
- 1 x Earphone
- 1 x Lanyard

Image: The YUEHISY MP3 Music Player, included earphones, and lanyard.
3. Product Overview
The YUEHISY MP3 Music Player is a compact and portable device designed for playing audio files. It features a simple interface for easy navigation and control.
Controls and Ports
- Play/Pause Button: Center button to start or pause playback.
- Next/Previous Track Buttons: Navigate between audio tracks.
- Volume Up/Down Buttons: Adjust the audio volume.
- On/Off Switch: Power the device on or off.
- USB Port: For connecting to a computer to transfer files and for charging.
- Memory Card Slot: For inserting a microSD card (not included).
- 3.5mm Headphone Jack: For connecting earphones or headphones.

Image: Front view of the MP3 player highlighting its control buttons, USB port, and memory card slot.

Image: A detailed view of the 3.5mm headphone jack on the MP3 player.
4. Setup
4.1. Charging the Device
Before first use, fully charge the MP3 player. Connect the device to a USB power source (e.g., computer USB port or USB wall adapter) using a compatible USB cable (not included). The built-in 180mAh battery provides extended playback time.
4.2. Inserting a Memory Card
The MP3 player requires a memory card (microSD, not included) to store and play music. It supports cards up to 64GB.
- Locate the memory card slot on the side of the MP3 player.
- Gently insert the microSD card into the slot until it clicks into place. Ensure the card is oriented correctly.

Image: The MP3 player with its memory card slot clearly shown, indicating where to insert the microSD card.
4.3. Loading Music Files
To load music onto your MP3 player:
- Ensure a memory card is inserted into the MP3 player.
- Connect the MP3 player to your computer using a USB cable. The device will be recognized as a removable storage device.
- Drag and drop your desired music files (e.g., MP3 format) from your computer to the memory card folder on the MP3 player.
- Safely eject the MP3 player from your computer before disconnecting the USB cable.
Note: The MP3 player itself may not be recognized by the computer directly; ensure the memory card is loaded for file transfer.
4.4. Connecting Headphones
The MP3 player does not have an external speaker. You must use headphones for audio playback.
- Plug the 3.5mm jack of the included earphones (or your preferred headphones) into the headphone jack on the MP3 player.

Image: The MP3 player with earphones connected, demonstrating its use for personal listening.
5. Operating Instructions
5.1. Power On/Off
To power on the device, slide the 'On/Off' switch to the 'On' position. To power off, slide it to the 'Off' position.

Image: The back of the MP3 player, clearly showing the 'On/Off' switch.
5.2. Basic Music Playback
- Ensure the device is powered on and headphones are connected.
- Press the Play/Pause button (center button) to start playing music.
- Press the Play/Pause button again to pause playback.
- Use the Next Track or Previous Track buttons to skip between songs.
- Adjust the volume using the Volume Up (+) and Volume Down (-) buttons.
5.3. Listening to Audiobooks/Novels
The MP3 player supports continuous playback for audiobooks and will resume from the last listened position, providing an uninterrupted listening experience.

Image: Various individuals utilizing the MP3 player during different activities such as exercise, cooking, studying, and outdoor running.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Avoid using liquid cleaners or solvents.
- Storage: Store the MP3 player 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.
- Water Resistance: This device is not waterproof. Avoid exposure to water or high humidity.
7. Troubleshooting
- Device not turning on: Ensure the battery is charged. Connect to a power source and try again. Check the 'On/Off' switch position.
- No sound: Verify that headphones are properly connected to the 3.5mm jack. Adjust the volume using the '+' button. Ensure the music file is not corrupted.
- Cannot load music files: Ensure a memory card is inserted into the MP3 player. The device requires a memory card to be recognized by a computer for file transfer.
- Memory card not recognized: Ensure the memory card is inserted correctly and fully seated. Try reinserting the card. Test with a different compatible microSD card if available.
- Device not recognized by computer: The product itself cannot be recognized by the computer without an inserted memory card. Ensure a memory card is loaded before connecting to a computer for file transfer.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | YUEHISYkw2dugq1ca-11 |
| Item Type | MP3 Player |
| Material | ABS |
| Built-in Battery | 180mAh Polymer Lithium Battery |
| Memory Card Support | Up to 64GB (microSD, not included) |
| External Playback | Not Supported (No built-in speaker) |
| Item Weight | 1.41 ounces (40 Grams) |
| Package Dimensions | 4.72 x 3.94 x 0.79 inches |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.