1. Introduction
This manual provides detailed instructions for the RUIZU 64GB Clip MP3 Player with Bluetooth 5.3. It covers essential information regarding product features, setup, operation, maintenance, and troubleshooting to ensure optimal performance and user experience. Please read this manual thoroughly before using the device.
2. Package Contents
Verify that all items listed below are present in your package:
- 1 x RUIZU Clip MP3 Player with Bluetooth
- 1 x 3.5mm wired stereo headphones
- 1 x Arm Band
- 1 x Waterproof Protective Pouch
- 1 x User Manual
3. Product Overview
Familiarize yourself with the physical components and features of your MP3 player.

Front and side view of the RUIZU Clip MP3 Player, highlighting its compact design and integrated clip.

Detailed view of the MP3 player showing the AUX jack, On/Off button, 64GB internal storage, support for up to 128GB TF card, 230mAh battery, 5 hours under Bluetooth mode, and 20 hours playback with wired headphones.

The MP3 player features HiFi lossless sound and a built-in pedometer function to track steps, distance, speed, and time. The device measures approximately 2.3 inches in height, 1.4 inches in width, and 0.7 inches in depth, weighing 25g.

The multifunction display indicates various features including Folder, Picture, Video, Bluetooth, Recording, E-Book, FM Radio, Equalizer, Pedometer, and Music playback.
4. Setup
4.1 Charging the Device
Before first use, fully charge the MP3 player. Connect the device to a USB power adapter (DC 5V 500mA - 800mA recommended) or a computer's USB port using the provided USB cable. A full charge typically takes approximately 1.5 hours and provides up to 20 hours of playback time with wired headphones or 5 hours with Bluetooth.
4.2 Transferring Music and Files
To transfer music, videos, or other supported files to your MP3 player:
- Connect the MP3 player to your computer using the supplied USB cable.
- The device will appear as a removable disk drive on your computer.
- Drag and drop your desired audio files (MP3, WMA, APE, FLAC, WAV, M4A, DRM, ACELP, OGG), video files (AMV 128x128 resolution), or e-book text files into the appropriate folders on the MP3 player.
- Safely eject the device from your computer before disconnecting the USB cable.

Connect the MP3 player to your computer via the USB cable to easily drag and drop music files.
5. Operating Instructions
5.1 Basic Music Playback
Navigate to the 'Music' option from the main menu. You can browse by artist, album, genre, or use the folder view. The player supports various playback modes including sequential play, single track loop, playlist loop, and shuffle mode.
5.2 Bluetooth Pairing
The RUIZU MP3 player features Bluetooth 5.3 for wireless audio streaming. To pair with Bluetooth headphones or speakers:
- Ensure your Bluetooth headphones or speaker are in pairing mode.
- On the MP3 player, navigate to the 'Bluetooth' menu.
- Select 'Search for device' to find available Bluetooth devices.
- Select your device from the list to connect.
Note: This device is designed for connecting to Bluetooth headphones or speakers and cannot connect to car Bluetooth, computers, or phones via Bluetooth.

The MP3 player supports Bluetooth 5.3 for seamless connection to headphones or speakers, offering sequential play, single loop, list loop, and shuffle repeat playback options.
5.3 FM Radio
To use the FM radio function, wired headphones must be connected as they act as the antenna. Navigate to the 'FM Radio' option from the main menu. You can auto-scan for stations or manually tune to your preferred frequency (87.5-108MHz).
5.4 Voice Recorder
The built-in voice recorder allows you to capture audio. Select 'Recording' from the main menu. You can choose different recording bitrates (e.g., 512kbps, 768kbps, 1024kbps, 1536kbps) and file formats (MP3 or WAV).
5.5 Pedometer Function
Activate the 'Pedometer' function to track your physical activity. The device can record steps, distance, speed, and time, providing useful data for your workouts or daily walks.
5.6 E-Book Reader
The MP3 player supports reading e-book text files. Transfer your .txt files to the device and access them via the 'E-Book' menu.
6. Maintenance
To ensure the longevity and optimal performance of your RUIZU MP3 player, follow these maintenance guidelines:
- Keep the device dry. Avoid exposure to moisture or liquids.
- Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Protect the screen from scratches.
- Avoid extreme temperatures. Store the device in a cool, dry place.
- Do not attempt to disassemble or repair the device yourself, as this will void the warranty.
7. Troubleshooting
If you encounter issues with your MP3 player, refer to the following common problems and solutions:
- Device does not turn on: Ensure the battery is charged. Connect the player to a power source and try again. If the issue persists, perform a hard reset (refer to the device's specific reset procedure if available, or hold the power button for an extended period).
- Cannot transfer files: Ensure the USB cable is securely connected to both the player and the computer. Verify that the player is in file transfer mode if prompted. Try a different USB port or cable.
- Bluetooth connection issues: Ensure the MP3 player's Bluetooth is enabled and your headphones/speaker are in pairing mode and within range. Delete previous pairings on both devices and try re-pairing. Remember, the player only connects to Bluetooth headphones/speakers, not cars, computers, or phones.
- No sound: Check the volume level on the player and connected headphones/speakers. Ensure headphones are properly plugged into the AUX jack. If using Bluetooth, ensure a stable connection.
- Pedometer data not saving: Ensure there is sufficient memory. Some pedometer functions may have a limited history storage. Clear previous history if necessary.
8. Specifications
| Product Dimensions | 0.7 x 1.4 x 2.3 inches |
| Item Weight | 4.2 ounces |
| Item Model Number | X52 |
| Batteries | 1 Lithium Polymer battery (included) |
| Connectivity Technology | Bluetooth 5.3, Aux, USB |
| Memory Storage Capacity | 64 GB (supports up to 128GB Micro SD Card) |
| Screen Size | 1.5 Inches |
| Display Technology | LCD |
| Special Features | Video Playback, Voice Recorder, Built-In Clip, Equalizer, FM Radio, Pedometer |
9. Warranty and Support
RUIZU products are manufactured to high quality standards. For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official RUIZU website. Keep your proof of purchase for warranty claims.