Introduction
This manual provides detailed instructions for the safe and efficient use of your Monster S290 Portable Bluetooth Speaker. Please read this manual thoroughly before operating the device and retain it for future reference.

Image: The Monster S290 Portable Bluetooth Speaker in an outdoor setting, highlighting its portability.
Package Contents
Ensure all items are present upon unboxing:
- Monster S290 Speaker x1
- AUX IN Cable x1
- USB-C Charging Cable x1
- Quick Start Guide & Warning Card x1

Image: All components included in the Monster S290 package.
Product Features
- 30W Powerful Audio: Delivers crisp highs and deep bass.
- Bluetooth 6.0: Ensures faster pairing, stable connection, and extended range.
- TWS Pairing: Connect two S290 speakers for a stereo sound experience.
- 15-Hour Playtime: Enjoy extended music playback on a single charge.
- Type-C Fast Charge: Quick and convenient recharging.
- IPX6 Waterproof: Resistant to splashes, sweat, and rain, suitable for outdoor use.
- Portable Design: Lightweight with a soft-touch silicone strap for easy carrying.
- Multiple Input Interfaces: Supports AUX, TF card, and USB playback.

Image: Visual representation of the Monster S290's key features.
Setup Guide
1. Charging the Speaker
Before first use, fully charge the speaker using the provided USB-C charging cable. The charging indicator light will show the charging status.
- Connect the USB-C cable to the speaker's charging port.
- Connect the other end of the cable to a compatible USB power adapter (not included).
- A full charge typically takes approximately 3-4 hours.
2. Powering On/Off
- To power on, press and hold the Power button (
) for 2-3 seconds until you hear an audible prompt and the LED indicator lights up. - To power off, press and hold the Power button again for 2-3 seconds.

Image: Close-up of the speaker's control panel, illustrating button functions.
3. Bluetooth Pairing
The speaker will automatically enter Bluetooth pairing mode when powered on for the first time or if no device is connected. The LED indicator will flash blue.
- Ensure the speaker is powered on and in pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for "Monster S290" in the list of available devices and select it to connect.
- Once connected, you will hear an audible confirmation, and the LED indicator will turn solid blue.
Video: Demonstration of the speaker's main functions, including power-on, Bluetooth pairing, and volume control.
4. True Wireless Stereo (TWS) Pairing
For an enhanced stereo experience, you can pair two Monster S290 speakers together.
- Ensure both S290 speakers are powered on and not connected to any Bluetooth device.
- On one speaker (this will be the primary speaker), press and hold the TWS button (often indicated by an 'M' or a chain link icon, refer to your quick start guide for exact icon) for 2-3 seconds.
- The primary speaker will search for the secondary speaker. Once connected, you will hear an audible prompt.
- Now, connect your device to the primary speaker via Bluetooth as described in step 3. Both speakers will play audio in stereo.

Image: Two Monster S290 speakers demonstrating True Wireless Stereo (TWS) pairing.
5. Connecting via AUX, TF Card, or USB
The speaker supports multiple input options:
- AUX Input: Connect an audio device using the provided 3.5mm AUX cable to the AUX port. The speaker will automatically switch to AUX mode.
- TF Card Playback: Insert a TF (MicroSD) card with audio files into the TF card slot. The speaker will automatically begin playing music from the card.
- USB Playback: Insert a USB flash drive with audio files into the USB port. The speaker will automatically begin playing music from the USB drive.

Image: The speaker's input panel with AUX, TF card, and USB ports.
Operating Instructions
Button Functions
- Power Button (
): Press and hold to power on/off. Short press to switch between input modes (Bluetooth, AUX, TF Card, USB). - Play/Pause Button (
): Short press to play or pause music. - Volume Down / Previous Track Button (
): Short press to decrease volume. Long press to go to the previous track. - Volume Up / Next Track Button (
): Short press to increase volume. Long press to go to the next track. - TWS Button (M): Press and hold to initiate TWS pairing (refer to TWS Pairing section).
Hands-Free Calling
When connected via Bluetooth, the built-in microphone allows for hands-free calling:
- Answer Call: Short press the Play/Pause button.
- End Call: Short press the Play/Pause button during a call.
- Reject Call: Long press the Play/Pause button.
Maintenance
- Keep the speaker away from extreme temperatures, direct sunlight, and corrosive materials.
- Clean the speaker with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Ensure the charging port cover is securely closed when not charging to maintain IPX6 water resistance.
- Store the speaker in a cool, dry place when not in use for extended periods.

Image: The Monster S290 speaker showcasing its IPX6 water-resistant feature.
Troubleshooting
| Problem | Solution |
|---|---|
| Speaker does not power on. | Ensure the speaker is charged. Connect it to a power source using the USB-C cable. |
| Cannot pair via Bluetooth. |
|
| No sound or low volume. |
|
| TWS pairing failed. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | Monster S290 |
| Material | Plastic |
| Speaker Type | Outdoor |
| Speaker Maximum Output Power | 30 Watts |
| Wireless Communication Technology | Bluetooth 6.0 |
| Connectivity Technology | Auxiliary, Bluetooth, USB |
| Audio Output Mode | Stereo |
| Surround Sound Channel Configuration | 2.0 |
| Special Features | Portable, 30W Loud Stereo Sound, Support AUX/TF Card, Bluetooth 6.0, True Wireless Stereo, Built-in Mic, 15H Playtime, Hands-Free Calling, IPX6 Waterproof, Skin-Friendly Touch |
| Power Source | Battery Powered |
| Battery | 1 AAA batteries required (included) - Note: This is likely a generic entry; the speaker features an internal rechargeable battery. |
| Control Method | Touch |
| Product Dimensions | 6D x 18.2W x 6H Centimetres |
| Item Weight | 490 g |
| Is Waterproof | True (IPX6) |
Warranty and Support
The Monster S290 Portable Bluetooth Speaker comes with a Limited Warranty. Please refer to the included "Quick Start Guide & Warning Card" for specific warranty terms and conditions. For further support, please contact Monster customer service.





