1. Introduction
Thank you for choosing the Monster Mission 100 Bluetooth Headphones. These on-ear headphones are designed to provide an immersive audio experience with powerful bass, crystal-clear call quality, and extended playtime. Featuring Bluetooth 5.4 connectivity and a comfortable, lightweight design, they are ideal for travel, work, and everyday listening. This manual provides detailed instructions to help you get the most out of your new headphones.
2. What's in the Box
- Monster Mission 100 Bluetooth Headphones (White)
- USB-C Charging Cable
- 3.5mm AUX Audio Cable
- User Manual

Image: The Monster Mission 100 Bluetooth Headphones in their white color, showcasing their sleek design.
3. Product Overview
The Monster Mission 100 headphones feature intuitive controls and a design focused on user comfort and audio quality.
3.1. Key Features
- Immersive Pure Monster Sound: Engineered for enhanced mid to high frequencies and powerful bass.
- Lightweight and Comfortable Design: Weighing only 5 oz with breathable ear cushions and an adjustable headband.
- AI Call Noise Cancellation: Built-in microphone intelligently filters ambient noise for clear calls.
- 40 Hours of Playtime: Extended battery life for long listening sessions.
- Multipoint Connection Bluetooth 5.4: Seamlessly connect to multiple devices simultaneously.
3.2. Controls and Ports
All controls and ports are conveniently located on one earcup for easy access.
- Power Button: Press and hold for 3 seconds to turn on, 5 seconds to turn off. Single press for Play/Pause. Press and hold for 2 seconds to reject a call.
- Volume Up (+): Single press to increase volume. Press and hold for 2 seconds for previous track.
- Volume Down (-): Single press to decrease volume. Press and hold for 2 seconds for next track.
- USB-C Port: For charging the headphones.
- 3.5mm AUX Port: For wired audio connection.
- Indicator Light: Displays power and connection status.

Image: A detailed view of the headphone's earcup, highlighting the volume controls, power button, USB-C charging port, and 3.5mm AUX port.

Image: The headphones demonstrating their adjustable headband and 60-degree swiveling earcups for enhanced comfort.
4. Setup
4.1. Charging the Headphones
Before first use, fully charge your headphones.
- Connect the USB-C charging cable to the charging port on the headphone earcup.
- Connect the other end of the USB-C cable to a USB power adapter (not included) or a computer's USB port.
- The indicator light will illuminate during charging and turn off when fully charged.
- A full charge takes approximately 2 hours.
4.2. Powering On/Off
- To Power On: Press and hold the Power button for 3 seconds until the indicator light flashes.
- To Power Off: Press and hold the Power button for 5 seconds until the indicator light turns off.
4.3. Bluetooth Pairing
Pair your headphones with your Bluetooth-enabled device.
- Ensure the headphones are powered off.
- Press and hold the Power button for 5 seconds until the indicator light flashes rapidly, indicating pairing mode.
- On your device, enable Bluetooth and search for available devices.
- Select "Monster Mission 100" from the list.
- Once connected, the indicator light will stop flashing and remain solid.
4.4. Multipoint Connection
The headphones can connect to two Bluetooth devices simultaneously.
- Pair the headphones with the first device as described above.
- Disable Bluetooth on the first device. The headphones will re-enter pairing mode.
- Pair the headphones with the second device.
- Re-enable Bluetooth on the first device. The headphones should automatically connect to both devices.

Image: The Monster Mission 100 headphones demonstrating seamless wireless connectivity to both a smartphone and a laptop, highlighting the Bluetooth 5.4 feature.
5. Operating Instructions
5.1. Audio Playback
- Play/Pause: Single press the Power button.
- Volume Up: Single press the '+' button.
- Volume Down: Single press the '-' button.
- Next Track: Press and hold the '-' button for 2 seconds.
- Previous Track: Press and hold the '+' button for 2 seconds.
5.2. Phone Calls
- Answer/End Call: Single press the Power button.
- Reject Call: Press and hold the Power button for 2 seconds.
- Activate Voice Assistant: (If supported by your device) Double-press the Power button.
5.3. Wired Mode (AUX)
Use the included 3.5mm AUX cable for a wired connection, useful when battery is low or for non-Bluetooth devices.
- Connect one end of the 3.5mm AUX cable to the AUX port on the headphone earcup.
- Connect the other end to the 3.5mm audio jack of your device.
- In wired mode, Bluetooth functions are disabled, and controls on the headphones may be limited.
Video: An unboxing and demonstration of the Monster Mission 100 Bluetooth Headphones, showing the contents of the box, the physical features, and how to adjust them for comfort. The video also highlights the various ports and buttons on the headphones.
6. Maintenance
Proper care will extend the life of your headphones.
- Cleaning: Wipe the headphones with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Storage: Store the headphones in a cool, dry place away from extreme temperatures and direct sunlight.
- Water Resistance: These headphones are Not Water Resistant. Avoid exposure to water, rain, or excessive moisture.
- Battery Care: To preserve battery life, charge the headphones regularly, even if not in frequent use. Avoid fully discharging the battery for extended periods.
7. Troubleshooting
If you encounter issues with your headphones, refer to the following common solutions:
| Problem | Solution |
|---|---|
| Headphones won't turn on | Ensure the headphones are charged. Connect to a power source and try again. |
| Cannot pair with device | Ensure headphones are in pairing mode (rapidly flashing indicator light). Turn off and on Bluetooth on your device. Move headphones closer to the device. |
| No sound or low volume | Check headphone and device volume levels. Ensure headphones are properly connected via Bluetooth or AUX cable. Try restarting both devices. |
| Sound distortion | Move closer to your device to avoid interference. Ensure no obstacles are between the headphones and the device. Try playing different audio sources. |
| Calls are not clear | Ensure the microphone is not obstructed. Reduce background noise if possible. |
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | Monster Mission 100 Bluetooth Headphones |
| Connectivity Technology | Wireless (Bluetooth 5.4), Wired (3.5mm Jack) |
| Battery Life | Up to 40 Hours |
| Charging Time | Approx. 2 Hours |
| Frequency Range | 20 Hz to 20,000 Hz |
| Control Type | Touch Control |
| Material | Plastic |
| Item Weight | 9.9 ounces |
| Water Resistance Level | Not Water Resistant |
| Manufacturer | Monster |
9. Warranty and Support
For warranty information and customer support, please refer to the official Monster website or contact the retailer where you purchased the product. Keep your proof of purchase for any warranty claims.
For additional assistance, you may visit the Monster Store on Amazon.





