1. Introduction
Thank you for choosing the PRUNUS R-818 Wood Retro FM Radio Bluetooth Mini Portable Speaker. This manual provides detailed instructions for the proper setup, operation, and maintenance of your device. Please read this manual thoroughly before use to ensure optimal performance and longevity of your product.
Image 1: PRUNUS R-818 Retro FM Radio, showcasing its classic wooden design and compact size.
2. Package Contents
Please check the box for the following items:
- 1 x R-818 Radio
- 1 x Owner's Manual
- 1 x USB-C to USB-A to AUX Cable
- 1 x Lanyard
Image 2: The complete package contents, including the radio, manual, cable, and lanyard.
3. Product Features
- Classic Wooden Design: Crafted from natural walnut wood, offering a vintage aesthetic.
- Versatile Connectivity: Supports Bluetooth 5.0 for wireless pairing with smartphones and tablets, and wired AUX connection for devices with a 3.5mm headphone jack.
- Enhanced FM Reception: Equipped with a high-quality DSP chip and built-in antenna for optimal FM channel reception. Features a 270° tuning window for precise station selection.
- Clear Audio Output: Integrated 3W speaker delivers rich and loud sound without distortion.
- Portable Design: Compact dimensions (9*4*6cm) and lightweight (145g) with an included lanyard for easy carrying.
- Rechargeable Battery: Built-in rechargeable battery supports USB charging.
Image 3: Illustrates the radio's universal compatibility (Bluetooth, FM, AUX) and its compact size in hand.
Image 4: Highlights the natural wood construction of the radio, emphasizing craftsmanship.
4. Controls and Indicators
Familiarize yourself with the controls and indicators of your R-818 radio:
- Volume Control / Power Knob: Located on top, turn to adjust volume. Press and hold to power on/off.
- Tuning Dial: Large circular dial on the front for selecting FM radio frequencies.
- Warm Light: Illuminates the tuning dial, changing color based on the selected mode (e.g., orange for FM, blue for Bluetooth/AUX).
- Mode Switch (OFF-FM-BT-AUX): Located on the back, slide to select between Off, FM Radio, Bluetooth, and AUX input modes.
- Charging Indicator: LED light on the back that indicates charging status.
- USB-C Charging Port: For connecting the charging cable.
- AUX Input Port: For connecting external audio devices.
Image 5: Detailed view of the radio's controls, including the volume knob, tuning dial, and mode switch.
Image 6: Close-up of the large control knob for volume and power.
Image 7: Illustration of the warm light indicator for different modes (FM/BT/AUX).
Image 8: The portable carrying strap attached to the radio.
5. Setup
- Initial Charging: Before first use, fully charge the radio using the provided USB-C cable. Connect the USB-C end to the radio's charging port and the USB-A end to a compatible USB power adapter (not included) or computer USB port. The charging indicator will illuminate during charging.
- Power On: Press and hold the Volume Control knob on top of the radio until the tuning dial light illuminates.
- Mode Selection: Slide the mode switch on the back of the radio to select your desired operating mode: OFF, FM, BT (Bluetooth), or AUX.
6. Operating Instructions
6.1 FM Radio Mode
- Slide the mode switch to the "FM" position. The tuning dial light will turn orange.
- Rotate the Tuning Dial on the front of the radio to scan for FM stations. The frequency range is 87-108MHz.
- Adjust the Volume Control knob to your preferred listening level.
- For optimal reception, ensure the radio is placed in an open area away from obstructions. The built-in antenna is designed to provide good signal quality.
6.2 Bluetooth Mode
- Slide the mode switch to the "BT" (Bluetooth) position. The tuning dial light will turn blue, and you will hear an audible prompt indicating Bluetooth pairing mode.
- On your smartphone, tablet, or other Bluetooth-enabled device, enable Bluetooth and search for available devices.
- Select "PRUNUS R-818" from the list of devices to pair. Once connected, you will hear a confirmation sound.
- You can now play audio from your connected device through the R-818 speaker.
Video 1: Demonstrates the Bluetooth pairing process and AUX connection for the PRUNUS R-818 radio.
6.3 AUX Input Mode
- Slide the mode switch to the "AUX" position. The tuning dial light will turn blue.
- Connect one end of the provided USB-C to USB-A to AUX cable (using the AUX adapter) to the AUX input port on the back of the radio.
- Connect the other end of the AUX cable to the headphone jack or audio output of your external audio device (e.g., MP3 player, computer).
- Play audio from your external device. The sound will be output through the R-818 speaker.
Image 9: Depicts the radio in a home setting, suggesting its clear and musical sound output.
7. Charging
The PRUNUS R-818 features a built-in rechargeable Lithium-Ion battery (3.7V, 450mAh).
- Connect the provided USB-C to USB-A cable to the radio's charging port.
- Connect the USB-A end to a standard USB power source (e.g., wall adapter, computer USB port) with a 5V 500mA output.
- The charging indicator light on the back of the radio will illuminate during charging. It will typically turn off or change color when fully charged (refer to specific LED behavior in the quick start guide if available).
- A full charge provides several hours of playback, depending on volume level and mode of operation.
8. Maintenance
- Keep the radio dry. Avoid exposure to water or excessive humidity.
- Clean the radio with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Avoid dropping the radio or subjecting it to strong impacts.
- Store the radio in a cool, dry place when not in use for extended periods.
- Charge the battery periodically if the radio is stored for a long time to maintain battery health.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery is depleted; Power switch is OFF. | Charge the radio fully; Slide the mode switch to FM, BT, or AUX. |
| No sound | Volume is too low; Incorrect mode selected; Device not connected properly (Bluetooth/AUX). | Increase volume; Select correct mode; Re-pair Bluetooth device or re-connect AUX cable. |
| Poor FM reception | Weak signal; Interference from other electronics. | Relocate the radio to an open area; Move away from other electronic devices. |
| Bluetooth not pairing | Radio not in Bluetooth mode; Device Bluetooth is off; Device too far. | Ensure radio is in BT mode; Turn on Bluetooth on your device; Keep devices within 10 meters. |
10. Specifications
| Feature | Detail |
|---|---|
| Brand | PRUNUS |
| Model | R-818 |
| Material | Wood |
| Tuner Technology | FM (87-108MHz) |
| Connectivity Technology | Bluetooth 5.0, AUX |
| Speaker Output Power | 3W (Max 5 Watts) |
| Power Source | Battery Powered |
| Battery Type | Lithium Ion (3.7V, 450mAh) |
| Charging Input | 5V 500mA (via USB-C) |
| Product Dimensions | 10.6L x 6.8W x 5H Centimeters |
| Item Weight | 145 g |
| Country of Origin | China |
11. Warranty and Support
PRUNUS products are designed for reliability and performance. For any pre-sale queries, post-purchase quality issues, or return/exchange related concerns, please contact our customer support team.
- Customer Support Email: Prunus-technik@hotmail.com
- Online Store: Visit the official PRUNUS store on Amazon for more information and products: PRUNUS Store
Image 10: Showcases the radio's portability, suitable for both outdoor and indoor environments.
