PRUNUS J-908 Portable AM/FM Radio User Manual

Introduction

Thank you for purchasing the PRUNUS J-908 Portable AM/FM Radio. This compact and versatile radio is designed for ease of use and portability, offering clear audio reception for both AM and FM bands, as well as MP3 playback from USB drives and TF cards. It also features a built-in emergency flashlight and a long-lasting rechargeable battery, making it an ideal companion for both indoor and outdoor activities.

Safety Information

Please read and understand all safety instructions before using this product. Keep this manual for future reference.

• Do not expose the device to rain, moisture, or extreme temperatures.
• Avoid dropping or subjecting the device to strong impacts.
• Do not disassemble or attempt to repair the device yourself. Refer all servicing to qualified personnel.
• Keep the device away from strong magnetic fields.
• Use only the specified charging cable and power adapter (DC5V / 500mA - 2A) to charge the battery.
• Dispose of batteries responsibly according to local regulations.

Package Contents

Verify that all items are present in the package:

• PRUNUS J-908 Portable Radio (Black)
• Rechargeable Lithium-ion Battery (1200mAh)
• Mini USB / AUX 2-in-1 Charging Cable
• User Manual
• Wrist Strap

Image: Contents of the PRUNUS J-908 package. This image displays the radio, a mini USB/AUX cable, a rechargeable lithium-ion battery, the user manual, and the packaging box.

Product Overview

Familiarize yourself with the various parts and controls of your PRUNUS J-908 radio.

Image: Front view of the PRUNUS J-908 Portable Radio. The image shows the speaker grille on the left, a digital display on the top right, and a numeric keypad with control buttons below it. An extendable antenna is visible on the top.

Image: Size comparison of the PRUNUS J-908 radio with an iPhone 7. This illustrates the compact dimensions of the radio, measuring approximately 117mm (4.60in) in length, 64mm (2.52in) in width, and 20mm (0.79in) in thickness, highlighting its portability.

Key Components:

• Digital Display: Shows frequency, mode, and track number.
• Speaker: Integrated 3W high-quality magnetic speaker.
• Numeric Keypad (0-9): For direct frequency input or track selection.
• Control Buttons: Play/Pause, Previous/Next Track, Mode, LED (Flashlight).
• Volume Dial: Rotary control for adjusting volume.
• Antenna: Extendable for improved radio reception.
• USB Port: For USB flash drive playback.
• TF Card Slot: For Micro SD/TF card playback.
• AUX Input: For connecting external audio devices.
• 3.5mm Headphone Jack: For private listening.
• Charging Port: Mini USB port for charging.

Setup

1. Battery Installation

1. Locate the battery compartment on the back of the radio.
2. Open the battery cover.
3. Insert the provided 1200mAh rechargeable lithium-ion battery, ensuring correct polarity.
4. Close the battery cover securely.

2. Charging the Battery

Before first use, fully charge the radio's battery.

• Connect the mini USB end of the charging cable to the radio's charging port.
• Connect the USB-A end of the cable to a DC5V / 500mA - 2A USB power adapter (not included), computer USB port, car charger, or portable power bank.
• The charging indicator on the radio will illuminate during charging. It will turn off or change color when fully charged.
• A full charge typically takes 3-5 hours. The radio can operate for over 10 hours on a full charge at 30% volume.
• The radio features a low power reminder and charging indicator for convenience.

Image: Diagram illustrating upgraded features. This image highlights the new upgraded 1200mAh battery for longer durability and provides tips on charging, including a low power reminder and charging indicator.

Operating Instructions

1. Power On/Off

To power on the radio, rotate the volume dial clockwise until you hear a click and the display illuminates. To power off, rotate the volume dial counter-clockwise until it clicks off.

2. Radio Mode (AM/FM)

• Switching Bands: Press the "MODE" button repeatedly to cycle through FM and AM radio bands. The current band will be displayed.
• Automatic Station Scan: In radio mode, press and hold the "Play/Pause" button. The radio will automatically scan and save all available stations. Stations will be numbered sequentially.
• Manual Tuning/Station Selection:
  • Use the "Previous/Next Track" buttons (◀◀ / ▶▶) to navigate through saved stations.
  • To directly input a frequency, use the numeric keypad (0-9). For example, to tune to 100.5 FM, press 1-0-0-5.
• Antenna: Extend the telescopic antenna for optimal FM reception. For AM reception, the internal antenna is generally sufficient, but rotating the radio may improve signal.

3. MP3 Playback (USB/TF Card)

The radio supports MP3 playback from USB flash drives (0-64GB) and TF (Micro SD) cards (0-64GB).

• Insert a USB flash drive into the USB port or a TF card into the TF card slot. The radio will automatically switch to MP3 mode and begin playback.
• Play/Pause: Press the "Play/Pause" button (▶▶) to pause or resume playback.
• Previous/Next Track: Press the "Previous/Next Track" buttons (◀◀ / ▶▶) to skip to the previous or next track.
• Folder Switching: The radio supports folder switching. Press the "Folder Change" button (often indicated by a refresh or loop icon) to navigate between folders on your USB drive or TF card. This allows you to easily switch between albums or categories of music.
• Direct Track Selection: Use the numeric keypad (0-9) to directly enter the track number you wish to play.

Image: Diagram illustrating the "Able To Change Folder" feature. This image shows the radio surrounded by icons representing different music genres (Blues, Electro, Jazz, R&B, Rap, Folk, Country, Pop, Chamber, Rock & Roll), indicating the ability to organize and switch between music folders on a USB drive or TF card.

4. AUX Mode

Connect external audio devices (e.g., smartphone, MP3 player) using the provided 2-in-1 AUX cable.

• Connect one end of the AUX cable to the radio's AUX input port.
• Connect the other end to the headphone jack or audio output of your external device.
• Press the "MODE" button until "AUX" is displayed.
• Audio from your external device will now play through the radio's speaker. Control playback from your external device.

Image: Diagram illustrating universal compatibility. This image shows the radio's ability to receive FM/AM signals, play MP3 format files from Micro SD/TF cards and USB flash drives, and connect to MP3/MP4 players or computers/laptops via the AUX jack.

5. Emergency Flashlight

The radio features a built-in LED flashlight for emergency situations or low-light conditions.

• To turn on the flashlight, press the "LED" button.
• To turn off the flashlight, press the "LED" button again.
• The flashlight is useful for camping, walking at night, power outages, or vehicle maintenance.

Image: Image demonstrating the emergency flashlight function. A person is shown working under a car, illuminated by the radio's integrated LED light, highlighting its utility in dark environments.

Maintenance

• Cleaning: Wipe the radio with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Storage: When not in use for extended periods, store the radio in a cool, dry place.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge it regularly, even if not in constant use.

Troubleshooting

Specifications

Image: Comparison table highlighting improvements of the new PRUNUS J-908 model over an older version. Key improvements include a 1200mAh battery, AM radio functionality, charging indicator, low battery reminder, upgraded headphone jack, and an upgraded emergency light.

Warranty and Support

PRUNUS products are designed with quality and reliability in mind. For warranty information and customer support, please refer to the contact details provided on the product packaging or the official PRUNUS website. Please retain your proof of purchase for warranty claims.

For further assistance or technical inquiries, please contact PRUNUS customer service.