Introduction
This manual provides essential instructions for the safe and efficient operation of your Monster Slate Portable Bluetooth Speaker. Please read this manual thoroughly before using the device and retain it for future reference.
The Monster Slate speaker is designed for portable audio, offering 20 watts of power, IP67 water resistance, and up to 12 hours of playtime. It features Bluetooth connectivity for wireless audio streaming and a speakerphone function for hands-free calls.
Safety Information
- Do not expose the speaker to extreme temperatures or direct sunlight for extended periods.
- Avoid dropping or subjecting the speaker to strong impacts.
- Do not attempt to disassemble or modify the speaker. This will void the warranty and may cause damage.
- Keep the speaker away from medical devices, as it contains magnets.
- Ensure all ports are securely closed when using the speaker near water to maintain IP67 water resistance.
- Use only the provided charging cable or a certified equivalent.
Package Contents
Please check that all items are present in your package:
- Monster Slate Portable Bluetooth Speaker
- USB Charging Cable
- Auxiliary Audio Cable
- User Manual (this document)
Product Overview
Familiarize yourself with the various parts and controls of your Monster Slate speaker.

Image: Top view of the Monster Slate speaker, highlighting the control buttons. From left to right, these include the power button, volume down, play/pause/speakerphone, volume up, and Bluetooth pairing button.
- Power Button: Press and hold to turn the speaker on or off.
- Volume Down Button: Press to decrease volume.
- Play/Pause/Speakerphone Button: Press to play or pause audio. Press to answer or end calls. Press and hold to activate voice assistant.
- Volume Up Button: Press to increase volume.
- Bluetooth Pairing Button: Press and hold to enter Bluetooth pairing mode.
- Charging Port (under protective flap): For connecting the USB charging cable.
- Auxiliary Input (under protective flap): For connecting devices via a 3.5mm audio cable.
Setup
1. Charging the Speaker
Before initial use, fully charge your Monster Slate speaker. The charging port is located under a protective flap on the side of the speaker.
- Open the protective flap.
- Connect the small end of the USB charging cable to the speaker's charging port.
- Connect the large end of the USB charging cable to a USB power adapter (not included) or a computer's USB port.
- The charging indicator light will illuminate during charging and turn off when fully charged.
- Close the protective flap securely after charging to maintain water resistance.

Image: Angled view of the Monster Slate speaker, showing the side where the protective flap for charging and auxiliary input is located.
2. Powering On/Off
- To turn on: Press and hold the Power Button until you hear an audible tone and the indicator light illuminates.
- To turn off: Press and hold the Power Button until you hear an audible tone and the indicator light turns off.
3. Bluetooth Pairing
Pair your Monster Slate speaker with a Bluetooth-enabled device (e.g., smartphone, tablet).
- Ensure the speaker is powered on.
- Press and hold the Bluetooth Pairing Button until the Bluetooth indicator light flashes rapidly, indicating it is in pairing mode.
- On your device, navigate to the Bluetooth settings and enable Bluetooth.
- Search for available devices and select "Monster Slate" from the list.
- Once paired, the Bluetooth indicator light will glow solid, and you will hear a confirmation tone.
- The speaker will automatically attempt to reconnect to the last paired device when powered on.
4. Auxiliary Connection
For devices without Bluetooth, use the auxiliary input.
- Open the protective flap on the side of the speaker.
- Connect one end of the 3.5mm auxiliary audio cable to the speaker's auxiliary input.
- Connect the other end of the cable to the headphone jack or audio output of your device.
- The speaker will automatically switch to auxiliary mode.
- Close the protective flap securely after connecting to maintain water resistance.
Operating the Speaker
Audio Playback
- Play/Pause: Press the Play/Pause Button once.
- Volume Adjustment: Press the Volume Up (+) or Volume Down (-) buttons.
Speakerphone Function
When connected via Bluetooth, the Monster Slate can be used for hands-free calls.
- Answer Call: Press the Play/Pause/Speakerphone Button once when a call comes in.
- End Call: Press the Play/Pause/Speakerphone Button once during a call.
- Reject Call: Press and hold the Play/Pause/Speakerphone Button for 2 seconds when a call comes in.
- Activate Voice Assistant: Press and hold the Play/Pause/Speakerphone Button for 2 seconds when not on a call.
Water Resistance (IP67)
The Monster Slate speaker is rated IP67, meaning it is protected from dust ingress and can withstand immersion in water up to 1 meter for up to 30 minutes.
- Ensure the protective flap covering the charging and auxiliary ports is securely closed before exposing the speaker to water.
- Do not submerge the speaker in saltwater or other liquids.
- After exposure to water, wipe the speaker dry with a soft cloth before charging or opening the protective flap.

Image: The Monster Slate speaker positioned on a rocky outdoor surface, demonstrating its rugged and water-resistant design suitable for various environments.
Maintenance
- Cleaning: Use a soft, damp cloth to clean the speaker's exterior. Do not use abrasive cleaners 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 speaker frequently. Charge it regularly, even if not in constant use.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not turn on. | Low battery. | Charge the speaker fully. |
| Cannot pair via Bluetooth. | Speaker not in pairing mode; device Bluetooth off; too far from speaker. | Ensure speaker is in pairing mode (flashing light). Turn on Bluetooth on your device. Move device closer to speaker (within 10 meters). Forget "Monster Slate" on your device and try pairing again. |
| No sound. | Volume too low; incorrect input source; device not playing audio. | Increase speaker and device volume. Ensure correct connection (Bluetooth or Aux). Check if audio is playing on your source device. |
| Poor audio quality. | Bluetooth interference; low battery. | Move speaker closer to the device. Avoid obstacles between speaker and device. Charge the speaker. |
Specifications
| Model Name | MNSLATE |
| Brand | Monster |
| Connectivity Technology | Bluetooth |
| Speaker Maximum Output Power | 20 Watts |
| Water Resistance Rating | IP67 |
| Audio Output Mode | Stereo |
| Special Features | Bluetooth, Portable, Waterproof, Speakerphone |
| Compatible Devices | Phones |
| Product Dimensions | 10 x 10 x 20 cm |
| Item Weight | 1.34 kg |
| Estimated Playtime | Up to 12 hours |
Warranty and Support
Monster provides a limited warranty for this product. For detailed warranty information, please refer to the warranty card included in your product packaging or visit the official Monster website. For technical support or customer service inquiries, please contact Monster customer support through their official channels.
Please note: Unauthorized disassembly or modification of the product will void the warranty.







