Introduction
Thank you for choosing the Greadio Portable CD Player CD02. This versatile device combines a CD player with a powerful speaker, offering multiple playback options including Bluetooth, FM radio, USB, and AUX. Its portable design, long-lasting rechargeable battery, and dynamic RGB lighting make it suitable for various environments. Please read this manual thoroughly to ensure proper use and optimal performance of your new device.
What's in the Box
- Portable CD Player x1
- Remote Control x1
- Type-C Charging Cord x1
- User Manual x1
- Reset Pin x1
Product Overview & Features
The Greadio CD02 is designed for both stationary and portable use, featuring a unique triangular shape and a transparent front panel that showcases the spinning CD with vibrant RGB lighting. It integrates multiple audio sources and offers robust sound output.
Key Features:
- HiFi Speaker System: Dual speakers with independent sound cavity design and inner magnetic speaker units for enhanced sound detail and bass.
- Multi-format CD Playback: Supports CD, CD-R, CD-RW, MP3, and WMA formats with 5 EQ presets.
- Dynamic RGB Lighting: Features 6-color LED modes (Red, Green, Blue, Yellow, Purple, White) and breathing light effects.
- Portable Design: Lightweight with a 4000mAh rechargeable battery for 6-12 hours of playback and a convenient retractable handle.
- Multiple Connectivity Options: Bluetooth 5.3 for wireless streaming, USB input, FM radio, Optical output, and 3.5mm AUX input/output.
- User-Friendly Controls: Includes a remote control and an LED display for easy operation.
- Anti-Skip Protection: Enhanced stability with a triangular design to minimize skips.

Figure 1: Front view of the Greadio Portable CD Player CD02 with RGB lighting.

Figure 2: The CD player with its integrated handle for easy transport.

Figure 3: Side panel illustrating the connectivity ports.
Setup
Charging the Device
Before first use, fully charge the CD player. The built-in 4000mAh battery provides 6-12 hours of playback. Charging typically takes 4-5 hours.
- Connect the provided Type-C charging cable to the charging port on the device.
- Plug the other end of the cable into a compatible USB power adapter (not included).
- The LED display will indicate charging status. Once fully charged, the indicator may change or turn off.
Video 1: Demonstrates how to charge the Greadio Portable CD Player using the Type-C cable.

Figure 4: The rechargeable CD player connected for charging.
Powering On/Off
- To power on, long press the power button located on the side panel.
- To power off, long press the power button again.
Operating Instructions
The CD02 offers various playback modes. Use the 'MODE' button on the device or remote control to switch between modes.
Video 2: Demonstrates switching between the five available modes on the CD player.
CD Playback
- Ensure the device is powered on and in CD mode.
- Gently open the transparent front cover by pulling it down.
- Place a CD (CD/CD-R/CD-RW/MP3/WMA format) onto the spindle, ensuring it is securely seated.
- Close the transparent front cover. The device will begin reading and playing the CD automatically.
- Use the volume knob or the remote control to adjust the volume. Use the skip buttons to navigate tracks.
Video 3: Instructions on how to insert and play a CD on the device.

Figure 5: Inserting a CD for playback.
Bluetooth Mode (Receiver)
Connect your smartphone or other Bluetooth-enabled devices to stream audio wirelessly.
- Press the 'MODE' button until 'BLUE' appears on the LED display. The device will enter pairing mode.
- On your mobile device, enable Bluetooth and search for 'CD02' in the list of available devices.
- Select 'CD02' to pair. A confirmation sound will indicate successful pairing.
- Play audio from your connected device. Volume and track control can be managed from either the CD player or your mobile device.
Video 4: Guide on connecting your phone to the CD player via Bluetooth.

Figure 6: Wireless audio streaming via Bluetooth.
FM Radio
Listen to your favorite FM radio stations.
- Press the 'MODE' button until 'FM' appears on the LED display.
- Use the tuning buttons to scan for available stations. Long press to auto-scan and save stations.
- Adjust volume using the knob or remote.

Figure 7: Enjoying FM radio on the device.
USB Playback
Play MP3/WMA files directly from a USB flash drive (max 128GB).
- Insert a USB flash drive into the USB port on the device.
- Press the 'MODE' button until 'USB' appears on the LED display.
- The device will automatically detect and play audio files from the USB drive.
- Use the control buttons or remote to manage playback and volume.

Figure 8: USB plug-in and play functionality.
AUX Mode
Connect external audio devices using the 3.5mm AUX cable.
- Connect one end of the 3.5mm AUX cable (provided) to the AUX input/output jack on the CD player.
- Connect the other end to the headphone jack or audio output of your external device.
- Press the 'MODE' button until 'AUX' appears on the LED display.
- Play audio from your external device. Volume can be controlled via the CD player or the external device.
Video 5: Demonstrates how to connect and use the AUX mode.

Figure 9: Connecting to a car's audio system via AUX mode.
RGB Lighting Control
The device features multiple RGB lighting modes to enhance your listening experience.
- Press the light button on the device or remote control to cycle through different lighting modes (e.g., colorful lights, breathing lights, single colors).
- Continue pressing the button to turn off the lights or select your preferred mode.
Video 6: Showcases the 8 different RGB lighting modes available on the CD player.

Figure 10: The CD player illuminated with colorful RGB lights.
Remote Control Usage
The included remote control allows for convenient operation from a distance.
- Ensure batteries are inserted correctly into the remote control (batteries not included).
- Point the remote control towards the front of the CD player.
- Use the buttons on the remote to control power, mode, volume, track navigation, EQ presets, and RGB lighting.

Figure 11: Using the remote control for the CD player.
Maintenance
Care and Cleaning
- Wipe the device with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Keep the CD compartment clean and free of dust to ensure optimal CD reading.
- Avoid exposing the device to extreme temperatures, direct sunlight, or high humidity.
Battery Care
- For optimal battery life, fully charge the device before long periods of storage.
- Recharge the battery at least once every three months if not in regular use.
Troubleshooting
Common Issues and Solutions:
- Device does not power on: Ensure the battery is charged or the device is connected to power. Try resetting the device using the provided reset pin.
- CD does not play or skips: Check if the CD is clean and free of scratches. Ensure the CD is properly seated in the compartment. Try a different CD.
- Bluetooth pairing issues: Make sure the device is in Bluetooth mode and discoverable. Ensure no other devices are currently connected. Try restarting both the CD player and your Bluetooth device.
- No sound: Check the volume level on both the CD player and the connected audio source. Ensure cables are securely connected in AUX mode.
- FM radio reception is poor: Adjust the device's position. Ensure there are no strong interference sources nearby.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 7.32 x 6.3 x 5.85 inches |
| Item Weight | 2.58 pounds |
| Manufacturer | Greadio |
| Model Number | CD02 |
| Battery | 4000mAh Rechargeable (2 Nonstandard Battery batteries included) |
| Connectivity Technology | Bluetooth 5.3, USB, 3.5mm AUX, Optical |
| Special Features | Anti-Skip Protection, Bluetooth, Rechargeable, RGB Lights, Remote Control, FM Radio |
| Supported CD Formats | CD, CD-R, CD-RW, MP3, WMA |
Warranty and Support
Greadio provides a 12-month warranty for this product, along with a 30-day money-back guarantee. For any questions, technical assistance, or warranty claims, please contact Greadio customer service. We offer 24/7 customer service to ensure a satisfactory experience.
Please refer to the contact information provided on the product packaging or the official Greadio website for support.



