1. Introduction
Thank you for choosing the Monster AirRock X901 Portable Bluetooth Speaker. This device combines high-quality audio with versatile features, including a COB flashlight, magnetic adsorption, and a portable clip design, making it ideal for various indoor and outdoor activities. This manual provides essential information for setting up, operating, and maintaining your speaker to ensure optimal performance.

2. Key Features
- Pure Monster Sound: Advanced audio technology for powerful, crystal-clear sound.
- Bluetooth 5.4: Ensures seamless and stable wireless connection with auto re-connection.
- Extended Playtime: Up to 8 hours at 80% volume, powered by a 600mAh battery with Type-C fast charging.
- IP67 Waterproof: Durable design resistant to water splashes and spills, perfect for outdoor use.
- TWS Pairing: Connect two speakers for true wireless stereo sound (left and right channels).
- COB Flashlight: Built-in high-gloss LED with three customizable lighting modes: Strong, Dim, and Strobe.
- Magnetically Adsorptive: Magnetic base allows attachment to metal surfaces.
- Portable Clips Design: Integrated clip for easy attachment to clothing or backpacks.
- Hands-free Calls: Built-in microphone for convenient call management.
- Compact & Portable: Lightweight (approx. 80g) and miniature size for easy carrying.



3. Specifications
| Attribute | Detail |
|---|---|
| Product Model | Monster AirRock X901 |
| Bluetooth Version | V5.4 |
| Battery Capacity | 3.7V/600mAh |
| Product Weight | 83.7g |
| Playtime | 8H (80% Volume) / 2H (100% Volume) |
| Speaker Size | 33mm 4Ω3W |
| Product Size | 74x48x33mm |
| Charging Port | Type-C |
| Output Power | 5W |
| Product Color | Black/Green |
| Connect Distance | Greater than 10 meters |
| Applicable Devices | Bluetooth-enabled devices |
| Waterproof Rating | IP67 |
| Built-in Microphone | Yes |
| Sound Modes | 3D Surround, Stereo, Smart, Live, Extra Bass, Standard, 3EQ Modes |
| Control | Volume control, Playback |
| Audio Codecs | sbc, AAC |

4. Setup Guide
4.1 Initial Charging
Before first use, fully charge your Monster AirRock X901 speaker. Connect the provided Type-C charging cable to the speaker's charging port and a suitable USB power source (e.g., wall adapter, computer USB port). The charging indicator light will show the charging status. A full charge takes approximately 2 hours.
4.2 Bluetooth Pairing
- Power On: Press and hold the Power button on the speaker until you hear an audible prompt and the LED indicator starts flashing, indicating it's in pairing mode.
- Activate Bluetooth: On your smartphone or other Bluetooth-enabled device, go to the Bluetooth settings and turn Bluetooth on.
- Select Device: Look for "Monster AirRock X901" in the list of available devices and select it.
- Confirm Connection: Once connected, you will hear a confirmation sound from the speaker, and the LED indicator will change to a solid light.
The speaker supports auto re-connection. Once paired, it will automatically connect to the last paired device when powered on, if the device's Bluetooth is active and within range.

4.3 TWS (True Wireless Stereo) Pairing
To enjoy a true stereo sound experience, you can pair two Monster AirRock X901 speakers together:
- Ensure both speakers are fully charged and powered off.
- Power on both speakers. They will enter Bluetooth pairing mode.
- On one of the speakers (this will be your primary speaker), double-press the TWS pairing button (refer to device diagram for button location). The speakers will attempt to connect to each other.
- Once successfully paired, you will hear a confirmation sound, and the LED indicators on both speakers will synchronize.
- Now, connect your smartphone or Bluetooth device to the primary speaker as described in Section 4.2. The audio will play in stereo across both speakers.
Each speaker can also be used independently.

5. Operating Instructions
5.1 Basic Controls
- Power On/Off: Press and hold the Power button.
- Play/Pause: Short press the Play/Pause button.
- Volume Up: Short press the Volume + button.
- Volume Down: Short press the Volume - button.
- Next Track: Long press the Volume + button.
- Previous Track: Long press the Volume - button.
5.2 COB Flashlight Operation
The speaker features a versatile COB flashlight with three modes:
- Turn On/Cycle Modes: Short press the Flashlight button to turn on the light. Each subsequent short press will cycle through Strong Light Mode, Dim Light Mode, and Strobe Mode.
- Turn Off: Long press the Flashlight button to turn off the light.

5.3 Hands-free Calling
When connected to your smartphone via Bluetooth, the built-in microphone allows you to make and receive calls hands-free:
- Answer Call: Short press the Play/Pause button when an incoming call rings.
- End Call: Short press the Play/Pause button during a call.
- Reject Call: Long press the Play/Pause button when an incoming call rings.
5.4 Magnetic Adsorption and Clip Usage
The speaker is designed for versatile placement:
- Magnetic Attachment: The bottom of the speaker contains a strong magnet. Simply place it on any metal surface (e.g., refrigerator, metal shelf) for secure attachment. The speaker can be rotated up to 220 degrees for optimal sound direction.
- Clip-on Design: Use the integrated clip to attach the speaker to your clothing, backpack strap, belt, or other suitable items for hands-free portability.


6. Maintenance
- Cleaning: Wipe the speaker with a soft, damp cloth. Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Storage: Store the speaker in a cool, dry place away from extreme temperatures and direct sunlight.
- Battery Care: To prolong battery life, avoid fully discharging the speaker frequently. Charge it regularly, even if not in use for extended periods.
- Waterproofing: While IP67 rated, avoid prolonged submersion in water. Ensure the charging port cover is securely closed before exposure to water. After exposure to water, dry the speaker thoroughly before charging.
- Avoid Impact: Do not drop or subject the speaker to strong impacts, as this may damage internal components.
7. Troubleshooting
7.1 Common Issues and Solutions
- Speaker does not power on:
- Ensure the battery is charged. Connect the speaker to a power source using the Type-C cable.
- Press and hold the Power button for a few seconds to ensure it's not just a short press.
- No sound or low volume:
- Check the volume levels on both the speaker and your connected device.
- Ensure the speaker is properly paired with your device. If not, re-pair it.
- Make sure the speaker is within the Bluetooth range (up to 10 meters).
- If using TWS, ensure both speakers are paired correctly and your device is connected to the primary speaker.
- Bluetooth pairing fails:
- Turn off and on the speaker and your device's Bluetooth.
- Delete "Monster AirRock X901" from your device's Bluetooth list and try pairing again.
- Ensure no other devices are actively connected to the speaker.
- Flashlight not working:
- Ensure the speaker has sufficient battery charge.
- Press the Flashlight button to cycle through modes or long-press to turn it off and on again.
8. User Tips
- For the best audio experience, place the speaker on a stable surface or clip it securely to avoid vibrations.
- When using the magnetic feature, ensure the metal surface is clean and flat for optimal adhesion.
- Experiment with the different sound modes (3EQ Modes) to find the best audio profile for your music genre.
- To maximize battery life, consider using the speaker at 80% volume or lower when possible.
- Always close the Type-C charging port cover tightly when not charging, especially in wet environments, to maintain the IP67 waterproof rating.
9. Warranty and Support
Your Monster AirRock X901 speaker comes with a standard manufacturer's warranty. Please refer to the product packaging or the official Monster website for detailed warranty terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact the retailer or Monster customer service directly.





