Introduction
Thank you for choosing the SOWO Portable Bluetooth Speaker. This manual provides essential information for setting up, operating, and maintaining your speaker. Designed for both home and outdoor use, this speaker features Bassboom Technology for enhanced bass, 25W loud stereo sound, LED lights, TWS pairing, and a long-lasting battery.
Key features include:
- BASSBOOM BASS: Improves bass by 28% for stronger auditory enjoyment.
- WIRELESS STEREO SURROUND SOUND: Supports TWS function for true stereo surround sound with two speakers.
- BRILLIANT SOUND WITH RGB LIGHT: Equipped with 25W stereo audio drivers, two wide bass passive radiators, and dual 256-level brightness LED lights.
- 16H POWERFUL BATTERY: High-capacity battery provides extended playtime.
- EXQUISITE FABRIC: Durable fabric and streamlined cylinder design for comfortable handling.
- IP67 WATERPROOF AND DUSTPROOF: Lightweight and portable, suitable for various environments like bathrooms, camping, and beaches.
- STRONG BLUETOOTH 5.0 SIGNAL: Connects devices from up to 100 feet unobstructed, compatible with smartphones, PCs, and laptops.
Getting Started
Package Contents:
- Portable Bluetooth Speaker
- Type-C Charge Cable
- Hanging Line
- User Manual

Figure 1: Speaker and included accessories.
Powering On/Off:
To power on the speaker, long press the power button located on the side control panel. The speaker will emit an audible cue and the LED lights will activate. To power off, long press the power button again.
Bluetooth Pairing:
1. Turn on the speaker. The Bluetooth indicator light will flash, indicating it's in pairing mode.
2. On your device (smartphone, PC, laptop), enable Bluetooth and search for 'Surgeboom 2' in the list of available devices.
3. Select 'Surgeboom 2' to connect. Once connected, the Bluetooth indicator light will stop flashing and remain solid.

Figure 2: Side control panel with power, volume, and Bluetooth buttons.
Operating Instructions
True Wireless Stereo (TWS) Pairing:
For an immersive stereo experience, you can pair two SOWO Surgeboom 2 speakers together.
1. Ensure both Surgeboom 2 speakers are turned on and not connected to any other Bluetooth devices.
2. On the primary speaker, press the interconnect button (often indicated by a chain link icon). The speaker will search for another Surgeboom 2.
3. Once connected, both speakers will play audio in synchronized stereo. The primary speaker will handle the left channel and the secondary speaker the right channel.
Video: Official SOWO guide on how to use Surgeboom 2, including TWS pairing and LED light functions.

Figure 3: Visual representation of two speakers connected via TWS for stereo sound.
LED Light Modes:
The speaker features colorful RGB LED lights. Double-click the power button to switch between different LED light modes or to turn off the lights.

Figure 4: Close-up of the speaker's passive radiator with active RGB lighting.
Hands-Free Calling:
The built-in microphone allows for hands-free phone calls when connected via Bluetooth. Use the control buttons to answer or end calls.

Figure 5: Speaker being used for hands-free communication.
Maintenance
Waterproof and Dustproof:
The SOWO Portable Bluetooth Speaker is IP67 rated, meaning it is protected against dust ingress and can withstand immersion in water up to 1 meter for 30 minutes. This makes it suitable for use in various outdoor and wet environments.

Figure 6: Speaker demonstrating its IPX7 waterproof capability.
Cleaning and Storage:
Wipe the speaker with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials. Store in a cool, dry place away from extreme temperatures.
Battery Life and Charging
The speaker is equipped with a high-capacity battery providing up to 16 hours of playtime on a full charge (actual playtime may vary based on volume and content). It can be recharged over a thousand times.
Charging Instructions:
Use the provided Type-C charge cable to connect the speaker to a compatible USB power source. The charging lamp indicator will show the charging status. A full charge takes approximately 3 hours.

Figure 7: Speaker can be used while charging.
Specifications
| Feature | Detail |
|---|---|
| Model Name | Surgeboom 2 (Q18) |
| Brand | SOWO |
| Connectivity Technology | Bluetooth 5.0 |
| Wireless Range | Up to 100 feet (unobstructed) |
| Speaker Output Power | 25W Stereo (Max 39W) |
| Water Resistance Level | IP67 (Waterproof & Dustproof) |
| Battery Life | 16 Hours |
| Charging Time | 3 Hours |
| Input Voltage | 5 Volts |
| Product Dimensions | 9"D x 3.4"W x 3.4"H |
| Item Weight | 1 Pounds |
| Included Components | User manual, Type-C charge cable, Portable Bluetooth speaker, Hanging line |
Troubleshooting
- No Power: Ensure the battery is charged. Connect to a power source using the Type-C cable.
- Cannot Pair Bluetooth: Make sure the speaker is in pairing mode (flashing Bluetooth light). Check your device's Bluetooth settings and ensure 'Surgeboom 2' is selected. If already paired with another device, disconnect it first.
- No Sound: Check the volume levels on both the speaker and your connected device. Ensure the speaker is properly paired.
- Poor Sound Quality: Move the speaker closer to your device to ensure a stable Bluetooth connection. Avoid obstacles between the speaker and device.
- TWS Pairing Failure: Ensure both speakers are Surgeboom 2 models and are not connected to any other devices before attempting TWS pairing.
Warranty and Support
SOWO provides a limited warranty for this product. For detailed warranty information and support, please refer to the official user guide or contact SOWO customer service.
You can access the full User Guide (PDF) here.