PRUNUS J-328 Portable Radio Instruction Manual

Introduction

This manual provides detailed instructions for the PRUNUS J-328 portable radio. It covers all aspects of operation, from initial setup to advanced features like recording and media playback. Please read this manual thoroughly to ensure proper use and to maximize your enjoyment of the device.

Product Overview

The PRUNUS J-328 is a compact and versatile portable radio designed for ease of use and excellent sound quality. It features FM radio reception, MP3 playback via TF card or USB, AUX input, and a recording function. Its small size and lightweight design make it ideal for on-the-go listening.

Key Features:

• Compact and Portable: Weighs only 72g (0.15lb), with dimensions of 93.5 x 48 x 19 mm (3.68 x 1.88 x 0.74 inches).
• Excellent Sound Quality: Equipped with a 3W magnetic speaker for clear and rich audio. Includes a 3.5mm headphone jack.
• Easy Operation: One-touch automatic station search, save, and numbering.
• Multi-functional: Supports FM (87.5-108 MHz), TF card, USB, AUX, and MP3 playback.
• Recording Function: Record favorite radio stations or voice notes onto a TF card.
• Hidden Antenna: Integrated antenna for a sleek design and durability.

Image: Front view of the PRUNUS J-328 Portable Radio, showcasing its compact design and control panel.

Image: The PRUNUS J-328 radio shown next to a credit card to illustrate its compact size and portability, with dimensions labeled.

Image: The PRUNUS J-328 radio with graphic elements representing sound waves, highlighting its perfect sound quality.

Image: A hand holding the PRUNUS J-328 radio, demonstrating the hidden antenna integrated into the wrist strap.

Setup

1. Charging the Battery

The PRUNUS J-328 is equipped with a rechargeable lithium-ion battery. To charge, connect the radio to a USB power source (e.g., computer, wall adapter) using the provided USB Type-C cable. A charging indicator light will illuminate during charging and turn off or change color when fully charged.

2. Inserting a TF Card (Optional)

For MP3 playback and using the recording function, insert a TF (Micro SD) card into the designated slot on the side of the radio. Ensure the card is inserted correctly until it clicks into place.

3. Powering On/Off

Press and hold the power button (usually labeled with a power symbol) to turn the radio on or off. The display will light up when the device is powered on.

Operating Instructions

Radio Operation (FM)

1. Automatic Station Search: With the radio powered on, press the SCAN button (often labeled with a play/pause icon and "SCAN"). The radio will automatically search for and save all available FM stations. Stations will be numbered sequentially. Note: Manual reordering of stations is not supported.
2. Manual Frequency Entry: Use the numeric keypad on the front of the radio to directly enter the desired FM frequency (e.g., press 8-7-5 for 87.5 MHz).
3. Changing Stations: Use the Previous (K<) and Next (>|) buttons to navigate through saved stations or frequencies.
4. Volume Control: Adjust the volume using the dedicated volume buttons or knob, typically located on the side or front panel.
5. Headphone Use: Plug 3.5mm headphones into the headphone jack for private listening.

Image: The PRUNUS J-328 radio display showing "90.5 FM" and instructions for automatic scanning and direct frequency entry using the keypad.

MP3/TF/AUX Playback

1. Mode Selection: Press the MODE button repeatedly to switch between available modes: FM radio, TF card, USB, and AUX.
2. TF Card/USB Playback: When in TF card or USB mode, the radio will automatically detect and play MP3 files from the inserted storage device. Use the Previous (K<) and Next (>|) buttons to skip tracks.
3. AUX Input: Connect an external audio device (e.g., smartphone, tablet, laptop) to the AUX port using a 3.5mm audio cable. Select AUX mode on the radio to play audio from the connected device.

Image: Diagram illustrating the universal compatibility of the PRUNUS J-328 radio with FM radio, Micro SD/TF cards for MP3, and AUX input for computers/laptops.

Recording Function

1. Preparation: Ensure a TF card is properly inserted into the radio.
2. Start Recording: While listening to an FM station or using the built-in microphone, press the REC button to begin recording. The display will indicate that recording is active.
3. Stop Recording: Press the REC button again to stop the recording. The recorded file will be saved to the TF card.
4. Playback Recordings: Switch to TF card mode using the MODE button and navigate to the recorded files for playback.

Image: The PRUNUS J-328 radio display showing a recording timer and the "REC" button highlighted, indicating the recording function is active.

Maintenance

• Cleaning: Wipe the radio with a soft, dry cloth. Do not use abrasive cleaners, solvents, or strong chemicals, as these may damage the surface.
• Storage: Store the radio in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity when not in use for extended periods.
• Battery Care: To prolong the life of the built-in battery, avoid fully discharging it frequently. Charge the device regularly, even if it has not been used for a while.
• Antenna Care: While the antenna is hidden, avoid excessive bending or pulling on the wrist strap to prevent internal damage.

Troubleshooting

Specifications

Warranty and Support

For warranty information and customer support, please refer to the contact details provided with your purchase or visit the official PRUNUS website. Keep your proof of purchase for any warranty claims.