1. Introduction
Thank you for purchasing the Volkano Neptune Bluetooth Wireless Speaker. This manual provides important information regarding the safe and efficient operation of your device. Please read it thoroughly before use and retain it for future reference.

Front view of the Volkano Neptune Bluetooth Wireless Speaker, showcasing its blue fabric base and illuminated top section.
The Volkano Neptune is a portable Bluetooth speaker designed for high-quality audio playback. It features True Wireless Stereo (TWS) functionality, RGB lighting, and a durable design, making it suitable for various environments.
2. Safety Information
To ensure safe operation, please observe the following guidelines:
- Do not expose the speaker to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping or subjecting the speaker to strong impacts.
- Do not attempt to disassemble or modify the speaker. This will void the warranty.
- Keep the speaker away from water and other liquids.
- Use only the provided charging cable or a certified equivalent.
- Clean the speaker with a soft, dry cloth only.
3. Package Contents
Please ensure all items are present in your package:
- Volkano Neptune Bluetooth Wireless Speaker
- USB Charging Cable (Power Cable)
- Instruction Manual (this document)
4. Controls and Indicators

Side view of the Volkano Neptune speaker, highlighting the control panel with various buttons.
Familiarize yourself with the speaker's controls:
- Power Button: Press and hold to power on/off. Short press to play/pause.
- Volume Up (+): Short press to increase volume. Long press for next track.
- Volume Down (-): Short press to decrease volume. Long press for previous track.
- Mode Button (M): Short press to switch between Bluetooth, USB, and AUX modes.
- RGB Light Button: Short press to change RGB lighting modes.
- Charging Port: USB-C port for charging.
- USB Port: For USB drive playback (supports up to 128GB).
- AUX Input: 3.5mm audio jack for wired connection.
5. Setup
5.1 Charging the Speaker
Before first use, fully charge the speaker. Connect the provided USB charging cable to the speaker's charging port and the other end to a USB power adapter (not included) or a computer's USB port.
- The charging indicator light will illuminate during charging.
- Charging time is approximately 2.5 hours.
- The indicator light will change or turn off once fully charged.
5.2 Powering On/Off
To power on the speaker, press and hold the Power Button for approximately 3 seconds. You will hear an audible prompt. To power off, press and hold the Power Button again for 3 seconds.
5.3 Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth mode. If not, short press the Mode Button (M) until you hear the Bluetooth pairing prompt. The indicator light will flash, indicating it's ready to pair.
- Enable Bluetooth on your device (smartphone, tablet, etc.).
- Search for "Volkano Neptune" in your device's Bluetooth settings.
- Select "Volkano Neptune" to connect. Once paired, you will hear a confirmation sound, and the indicator light will stop flashing.
The speaker will automatically attempt to reconnect to the last paired device when powered on.
5.4 True Wireless Stereo (TWS) Pairing
TWS allows you to connect two Volkano Neptune speakers for a stereo sound experience.
- Ensure both Volkano Neptune speakers are powered on and not connected to any Bluetooth device.
- On one of the speakers (this will be the primary speaker), double-press the Power Button. You will hear a prompt indicating TWS pairing mode.
- The two speakers will automatically search for and connect to each other. Once connected, you will hear a confirmation sound.
- Now, connect your device to the primary speaker via Bluetooth as described in section 5.3. Both speakers will play audio in stereo.
To disconnect TWS, double-press the Power Button on either speaker.
6. Operating
6.1 Playing Audio
- Bluetooth Mode: Once paired, play audio from your connected device. Use the speaker's Power Button for play/pause, and Volume +/- buttons for volume adjustment and track navigation.
- USB Mode: Insert a USB flash drive (up to 128GB) into the USB port. The speaker will automatically switch to USB mode and begin playing audio files. Use the speaker's controls for playback.
- AUX Mode: Connect an audio device using a 3.5mm AUX cable (not included) to the AUX input. Short press the Mode Button (M) to switch to AUX mode. Control playback from your connected device.
6.2 Answering Calls
When connected via Bluetooth to a smartphone, the speaker can be used for hands-free calls.
- Answer Call: Short press the Power Button.
- End Call: Short press the Power Button again.
- Reject Call: Press and hold the Power Button for 2 seconds.
6.3 RGB Lighting Control
The Volkano Neptune speaker features dynamic RGB lighting. Short press the RGB Light Button to cycle through different lighting modes or to turn the lights off.

The Volkano Neptune speaker displaying its green RGB lighting effect.
7. Maintenance
- Cleaning: Use a soft, dry, lint-free cloth to clean the speaker's exterior. Do not use abrasive cleaners, solvents, or chemical agents.
- Storage: When not in use for extended periods, store the speaker in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the speaker frequently. Charge it regularly, even if not in use.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Low battery. | Charge the speaker fully. |
| Cannot pair via Bluetooth. | Speaker not in pairing mode; device Bluetooth off; too far apart. | Ensure speaker is in pairing mode (flashing light). Turn on device Bluetooth. Move speaker closer to device (within 10 meters). |
| No sound. | Volume too low; incorrect mode; device not playing. | Increase speaker and device volume. Ensure correct mode (Bluetooth, USB, AUX). Check if audio is playing on the connected device. |
| TWS pairing fails. | Speakers already connected to another device; not in TWS pairing mode. | Ensure both speakers are disconnected from other devices. Double-press the Power Button on one speaker to initiate TWS pairing. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Volkano |
| Model Name | Neptune |
| Connectivity Technology | Bluetooth, USB, Wireless |
| Bluetooth Version | 5.4 |
| Speaker Type | Portable Speaker |
| RMS Output | 5W |
| Playtime | Up to 10 hours |
| Charging Time | 2.5 hours |
| Max USB Size | 128GB |
| Compatible Devices | Desktop, Laptop, Smart Watch, Smartphone |
| Included Components | Power Cable |
| Product Dimensions | 11.7D x 11.7W x 17.5H centimetres |
| Impedance | 3 Ohms |
10. Warranty and Support
Your Volkano Neptune Bluetooth Wireless Speaker is covered by a standard manufacturer's warranty. Please refer to the warranty card included in your original packaging for specific terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact Volkano customer service through their official website or the retailer where the product was purchased. Keep your proof of purchase for warranty validation.





