PRUNUS J-924 Portable DAB+/FM Survival Radio User Manual

1. Introduction

The PRUNUS J-924 is a versatile portable radio designed for everyday use and emergency situations. It features DAB+/FM radio reception, Bluetooth connectivity, a powerful 10000mAh rechargeable battery, multiple charging options including hand crank and solar panel, an integrated flashlight, reading lamp, SOS alarm, and a compass. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance and longevity of your device.

Image: The PRUNUS J-924D Emergency Survival Radio, highlighting its key features including the 10000mAh power bank function, SOS alarm, LED flashlight, and reading lamp.

2. Product Overview

Familiarize yourself with the components of your PRUNUS J-924 radio:

• DAB+/FM Tuner: For digital and analog radio reception.
• Antenna: Extendable for improved signal reception.
• Control Panel: Buttons for volume, tuning, mode selection, and scanning.
• LCD Display: Shows frequency, time, battery status, and station information.
• Hand Crank: For manual power generation.
• Solar Panel: For solar charging.
• LED Flashlight: Integrated light source for illumination.
• Reading Lamp: Panel of LEDs for diffused light.
• SOS Alarm Button: Activates loud siren and flashing lights for emergencies.
• USB-C Input: For charging the radio.
• USB-A Output: For charging external devices (power bank function).
• AAA Battery Compartment: For optional AAA battery power.
• Compass: Integrated into the strap for navigation.
• 3.5mm Earphone Jack: For private listening.
• TF/SD Card Slot: For playing music from memory cards.

Image: Front view of the PRUNUS J-924 radio, illustrating its compact size (6.7 inches long, 2.9 inches wide, 3.6 inches high) and key features including reading lamp, SOS alarm, AAA battery support, hand crank, LED flashlight, power bank, USB-C charging, solar charging, and 3.5mm earphone jack.

3. Setup

Before first use, it is recommended to fully charge the internal 10000mAh battery.

1. Initial Charge: Connect the radio to a USB power adapter (not included) using the provided USB-C cable. The battery indicator on the LCD display will show charging progress.
2. AAA Batteries (Optional): For additional power backup, open the battery compartment and insert 3 AAA batteries, ensuring correct polarity. Note that AAA batteries are not rechargeable via the radio's charging methods.
3. Antenna: Extend the telescopic antenna for optimal radio reception.

4. Operating Instructions

4.1 Power On/Off

Press and hold the Power button () to turn the radio on or off.

4.2 Radio Operation (DAB+/FM)

Image: The PRUNUS J-924 radio displaying DAB+/FM reception capabilities, with frequency ranges for FM (87-108MHz) and DAB/DAB+ (168-240MHz).

1. Select Mode: Press the BAND/ALARM button to switch between DAB+ and FM modes.
2. Auto Scan: In DAB+ or FM mode, press the SCAN button to automatically scan and save available stations. The radio can store up to 100 DAB and 100 FM stations.
3. Manual Tuning: Use the TUNE +/- buttons to manually adjust the frequency.
4. Preset Stations: Use the M+/M- buttons to navigate through saved preset stations.
5. Volume Control: Use the VOL +/- buttons to adjust the volume.

4.3 Bluetooth Connectivity

The radio can function as a Bluetooth speaker.

1. Activate Bluetooth: Press the TIME/MODE button repeatedly until "Bluetooth" mode is displayed on the LCD screen. The radio will enter pairing mode.
2. Pairing: On your mobile device, search for Bluetooth devices and select "PRUNUS J-924" to connect.
3. Playback: Once connected, you can play audio from your device through the radio.

Image: The PRUNUS J-924 radio demonstrating its multimedia capabilities, including Bluetooth connectivity, TF/SD card playback, and USB drive support, allowing users to enjoy music from various sources.

4.4 SOS Alarm

In an emergency, activate the SOS alarm to attract attention.

• Activate: Press and hold the SOS button. The radio will emit a loud siren and the flashlight will flash brightly.
• Deactivate: Press the SOS button again to turn off the alarm.

Image: Close-up of the PRUNUS J-924 radio highlighting the loud SOS alarm feature and the integrated compass on the strap, designed for emergency situations.

4.5 Flashlight and Reading Lamp

The radio includes two lighting options.

• Flashlight: Press the Light button once to turn on the front LED flashlight. Press again to turn off.
• Reading Lamp: Press the Light button twice to turn on the top reading lamp. Press again to turn off.

Image: Demonstrating the PRUNUS J-924's LED flashlight being used to illuminate a dark area and the reading lamp providing light for reading.

4.6 Alarm Clock

Set an alarm to wake up to your favorite radio station.

• Setting Alarm: Press and hold the BAND/ALARM button to enter alarm setting mode. Use TUNE +/- to adjust time and M+/M- to confirm.
• Activating Alarm: Once set, ensure the alarm icon is visible on the display.
• Snooze/Off: Press any button to snooze or turn off the alarm when it sounds.

Image: The PRUNUS J-924 radio's display showing the time and date, indicating its 12/24 hour alarm clock functionality.

4.7 Power Bank Function

Use the radio's large capacity battery to charge your mobile devices.

• Connect Device: Connect your mobile phone or other USB-powered device to the USB-A output port on the radio using your device's charging cable.
• Charging: The radio will automatically begin charging the connected device.

Image: The PRUNUS J-924 radio connected via USB to a smartphone, illustrating its 10000mAh large-capacity power bank function for charging external devices during emergencies.

5. Charging Methods

The PRUNUS J-924 offers multiple ways to recharge its internal 10000mAh battery, ensuring power availability in various situations.

Image: Visual representation of the five charging methods for the PRUNUS J-924 radio: Hand Crank, 10,000mAh Built-in Battery (referring to its capacity, not a charging method itself, but the source of power), USB-C Charging, 3 x AAA Battery (for power, not charging), and Solar Panel.

• USB-C Charging: Connect the provided USB-C cable to the radio's USB-C input and a standard USB power adapter (5V/2A recommended) or computer USB port. This is the fastest charging method.
• Hand Crank: Rotate the hand crank clockwise or counter-clockwise at a steady pace (approx. 130-150 RPM) for manual power generation. Cranking for 1 minute can provide approximately 3-5 minutes of radio use or emergency light.
• Solar Panel: Place the radio with the solar panel facing direct sunlight. The solar panel is primarily for maintaining battery charge and extending battery life, not for rapid charging.
• Built-in 10000mAh Battery: The primary power source, offering extended operation time.
• 3 x AAA Batteries (Not Rechargeable): Insert three AAA dry cell batteries into the compartment for an alternative power source when the internal battery is depleted. These batteries are not recharged by the radio.

6. Specifications

7. Maintenance

• Cleaning: Wipe the radio with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Storage: Store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
• Battery Care: If storing for extended periods, charge the internal battery at least once every 3 months to maintain its health.
• Water Resistance: The radio is not waterproof. Avoid exposure to rain or moisture.

8. Troubleshooting

9. Warranty and Support

For warranty information and customer support, please refer to the documentation included with your purchase or contact PRUNUS customer service directly. Information regarding spare parts availability and software updates is not explicitly provided in the product specifications.

For further assistance, you may visit the official PRUNUS website or contact their support channels.