Greadio GR919B Retro Bluetooth Speaker FM Radio User Manual

1. Introduction

Thank you for purchasing the Greadio GR919B Retro Bluetooth Speaker and FM Radio. This device combines classic vintage aesthetics with modern audio technology, offering versatile listening options including FM radio, Bluetooth 5.0 connectivity, TF card playback, and AUX input. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your speaker.

2. Important Safety Information

• Do not expose the device to water, moisture, or extreme temperatures.
• Avoid dropping or subjecting the speaker to strong impacts.
• Do not attempt to disassemble or repair the device yourself. Refer all servicing to qualified personnel.
• Use only the provided charging cable or a certified equivalent.
• Keep out of reach of children.
• Dispose of batteries and electronic components responsibly according to local regulations.

3. Package Contents

Please check the package for the following items:

• Greadio GR919B Retro Bluetooth Speaker
• Micro USB Charging Cable
• AUX Cable
• User Manual

Figure 3.1: Image showing the speaker, Micro USB charging cable, AUX cable, and user manual included in the product package.

4. Product Overview

4.1. Front Panel Controls

Figure 4.1: Front view of the Greadio GR919B Retro Bluetooth Speaker, showcasing its vintage design with a blue casing, gold accents, and a classic FM radio dial.

• FM Tuning Dial: Rotate to select FM radio stations.
• Volume Knob (Left): Rotate to adjust the audio volume.
• Mode Knob (Right): Rotate to switch between FM Radio, Bluetooth (BT), and AUX input modes.

4.2. Rear Panel Ports

Figure 4.2: Rear view of the Greadio GR919B speaker, showing the Micro USB charging/AUX port, TF card slot, and power switch.

• Micro USB Port: Used for charging the internal battery and for AUX audio input.
• TF Card Slot: Insert a TF (MicroSD) card for MP3 playback.
• Power Switch: Slide to turn the speaker ON or OFF.

4.3. Dimensions

Figure 4.3: Diagram illustrating the compact dimensions of the Greadio GR919B speaker: 4.4 inches length, 2.7 inches height, and 2 inches width.

5. Setup

5.1. Charging the Speaker

1. Locate the Micro USB charging cable.
2. Connect the Micro USB end of the cable to the Micro USB port on the rear of the speaker.
3. Connect the USB-A end of the cable to a standard USB power adapter (not included) or a computer's USB port.
4. The charging indicator light will illuminate (color may vary) to show that the speaker is charging.
5. Once fully charged, the indicator light will change or turn off. A full charge typically takes a few hours.

Note: The speaker has a built-in rechargeable Lithium-Ion battery. For first-time use, it is recommended to fully charge the speaker.

6. Operating Modes

6.1. Power On/Off

Slide the Power Switch on the rear panel to the 'ON' position to turn on the speaker. Slide it to 'OFF' to power down the device.

6.2. Bluetooth Mode

1. Turn on the speaker.
2. Rotate the Mode Knob to select 'BT' (Bluetooth) mode. The speaker will emit an audible prompt and the Bluetooth indicator light will flash, indicating it is ready for pairing.
3. On your smartphone or other Bluetooth-enabled device, enable Bluetooth and search for available devices.
4. Select 'Greadio GR919B' (or similar name) from the list of devices.
5. Once paired, the speaker will emit another audible prompt, and the Bluetooth indicator light will stop flashing and remain solid. You can now play audio from your device through the speaker.

Figure 6.1: The Greadio GR919B speaker wirelessly connected to a smartphone via Bluetooth, playing music.

6.3. FM Radio Mode

1. Turn on the speaker.
2. Rotate the Mode Knob to select 'FM' mode.
3. Slowly rotate the FM Tuning Dial to scan for available radio stations. The indicator on the dial will move to show the selected frequency.
4. Adjust the Volume Knob to your desired listening level.

Figure 6.2: The Greadio GR919B speaker on a beach, illustrating its use for listening to FM radio outdoors.

6.4. TF Card Playback

1. Ensure the speaker is powered on.
2. Insert a TF (MicroSD) card containing MP3 audio files into the TF Card Slot on the rear panel.
3. The speaker should automatically switch to TF card mode and begin playing the audio files. If not, rotate the Mode Knob to cycle through modes until TF card playback begins.

6.5. AUX Input Mode

1. Turn on the speaker.
2. Connect one end of the provided AUX cable to the Micro USB port on the rear of the speaker.
3. 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).
4. Rotate the Mode Knob to select 'AUX' mode.
5. Play audio from your external device. The speaker will output the sound.

7. Maintenance

• Cleaning: Wipe the speaker with a soft, dry cloth. Do not use abrasive cleaners, alcohol, or solvents.
• Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in use, to maintain battery health.

8. Troubleshooting

9. Specifications

• Model: GR919B
• Dimensions: 4.4 x 2.7 x 2 inches (11.2 x 6.9 x 5.1 cm)
• Weight: 7.7 ounces (218 grams)
• Connectivity: Bluetooth 5.0, AUX Input, TF Card Slot
• Radio Bands: FM
• Power Source: Battery Powered (1 Lithium Ion battery included)
• Manufacturer: Greadio

10. Warranty and Support

The Greadio GR919B Retro Bluetooth Speaker comes with a one-year manufacturer's warranty. Greadio also provides lifetime customer service for product-related inquiries and support (excluding wear and tear).

For technical assistance or warranty claims, please contact Greadio customer service through the retailer where the product was purchased or visit the official Greadio store online.

Greadio Official Store: Visit Greadio Store