Introduction
The DOSS Extreme Boom Bluetooth Outdoor Speaker is designed to deliver powerful, immersive audio for all your outdoor adventures. Featuring 60W of mighty sound, deep bass, and a robust IPX6 waterproof rating, this speaker is built to withstand the elements while providing up to 30 hours of continuous playtime. Its portable design with a built-in handle and flexible strap makes it easy to carry wherever your music takes you.

Figure 1: DOSS Extreme Boom Bluetooth Outdoor Speaker in Orange. This image shows the speaker from a front-angle view, highlighting its robust design and integrated handle.
What's in the Box
Please check the package contents to ensure all items are present:
- 1 x DOSS Extreme Boom Bluetooth Outdoor Speaker
- 1 x USB-C charging cable
- 1 x Portable Strap
- 1 x User Manual
Setup Guide
1. Charging the Speaker
Before first use, fully charge the speaker. Connect the provided USB-C charging cable to the speaker's DC IN port (located under the protective flap on the back) and the other end to a USB power adapter (not included). The battery indicator lights on the top panel will show charging progress. A full charge takes approximately 6 hours.

Figure 2: Rear view of the DOSS Extreme Boom speaker, showing the protective flap covering the USB-C charging port, USB-A output, AUX-in, and TF card slot.
2. Powering On/Off
Press and hold the Power button (
) on the top panel for 2-3 seconds to turn the speaker on or off. A sound prompt will indicate the power status.
3. Bluetooth Pairing
- Turn on the DOSS Extreme Boom speaker. The Bluetooth indicator light will flash blue, indicating it's in pairing mode.
- Enable Bluetooth on your smartphone, tablet, or other Bluetooth-enabled device.
- Search for "DOSS Extreme Boom" in your device's Bluetooth list and select it to connect.
- Once successfully paired, the Bluetooth indicator light will turn solid blue, and you will hear a confirmation sound.
Operating Instructions
Button Functions
| Button | Function |
|---|---|
Power ( ) | Press and hold for 2-3 seconds to power on/off. |
| BASS | Press to toggle Deep Bass Booster on/off. |
| - / + | Short press for volume down/up. Long press for previous/next track. |
Play/Pause ( ) | Press to play or pause music. |
| M (Mode) | Press to switch between Bluetooth, AUX, and TF Card modes. |
TWS ( ) | Press and hold to activate True Wireless Stereo (TWS) pairing. |
True Wireless Stereo (TWS) Pairing
For an enhanced stereo experience, you can pair two DOSS Extreme Boom speakers together:
- Ensure both DOSS Extreme Boom speakers are powered on and not connected to any other Bluetooth device.
- On one speaker (this will be your primary speaker), press and hold the TWS button (
) for 2-3 seconds. You will hear a pairing prompt. - The primary speaker will automatically search for the second speaker. Once connected, you will hear a confirmation sound, and both speakers will play in stereo.
- Now, connect your Bluetooth device to the primary speaker as usual.

Figure 3: Two DOSS Extreme Boom speakers paired for an immersive stereo sound experience, shown with a group of people enjoying music by a lake.
Using the Power Bank Feature
The DOSS Extreme Boom speaker features an integrated USB-A port (labeled "USB OUT" under the protective flap) that allows you to charge your phone or other devices on the go. Simply connect your device's charging cable to this port.
Video 1: Official product video demonstrating the DOSS Extreme Boom Bluetooth Speaker's features, including its portability, sound, and extra bass. This video is provided by the seller, Wonders Tech.
Maintenance and Care
Water Resistance (IPX6)
The DOSS Extreme Boom speaker is IPX6 waterproof, meaning it can withstand powerful water jets from any direction. This makes it suitable for outdoor use and protection against rain or splashes. Important: Do not submerge the speaker in water. Ensure the protective flap covering the ports on the back is securely closed before exposing the speaker to water.

Figure 4: The DOSS Extreme Boom speaker positioned in a shallow stream, demonstrating its IPX6 waterproof capability for outdoor use.
Cleaning and Storage
- Clean the speaker with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- If not used for extended periods, charge the battery periodically to maintain its lifespan.
Troubleshooting
| Problem | Solution |
|---|---|
| Speaker does not power on. | Ensure the battery is charged. Connect the speaker to a power source using the USB-C cable. |
| Cannot pair with Bluetooth device. |
|
| No sound or low volume. |
|
| Poor sound quality. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | Extreme Boom |
| Speaker Type | Outdoor Bluetooth Speaker |
| Speaker Maximum Output Power | 60 Watts |
| Connectivity Technology | Bluetooth, Auxiliary, TF Card |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Water Resistance Level | IPX6 Waterproof |
| Battery Life | Up to 30 Hours (at 50% volume) |
| Battery Capacity | 10400 mAh |
| Charging Time | 6 Hours |
| Power Source | Battery Powered |
| Product Dimensions | 12.7"D x 4.8"W x 7.3"H |
| Item Weight | 5.59 Pounds |
| Special Features | Deep Bass Booster, TWS Expandable Sound, Built-In Powerbank |

Figure 5: Dimensions of the DOSS Extreme Boom speaker, showing its length, width, and height for reference.
Warranty and Support
One-Year Warranty
Our products are backed by a 12-month warranty, starting from the date of purchase, covering any quality-related concerns.
Customer Support
If you have any issues with the product, please feel free to contact us. We are committed to providing you with 24-hour prompt assistance and support!
- Phone: 1-833-275-3677
- Email: support@dossav.com

Figure 6: DOSS customer support details, including phone number and email address, for assistance with product inquiries.
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