1. Introduction
Thank you for choosing the MONSTER Wireless Translation Earbuds. These AI-powered open-ear headphones offer real-time translation in 144 languages, HIFI bass, ENC noise reduction, and Bluetooth 5.4 connectivity. Designed for comfort and versatility, they provide an immersive audio experience for communication, music, and calls. This manual will guide you through the setup, operation, and maintenance of your new earbuds.
2. Package Contents
Please check the package for the following items:
- 1 x Pair of Bluetooth 5.4 AI Translation Earphones
- 1 x Charging Case
- 1 x User Manual
- 1 x Charging Cable (Type-C)
3. Specifications
| Feature | Specification |
|---|---|
| Brand Name | MONSTER |
| Product Name | AI Earphones |
| Bluetooth Version | Bluetooth 5.4 |
| Battery Capacity (Earbuds) | 350mAh |
| Battery Life (Single Use) | Up to 8 hours |
| Battery Life (Total with Case) | Up to 60 hours |
| Charging Case Recharges | 5-7 times |
| Standby Time | 240 hours |
| Translation Languages | 144 languages (Real-time AI) |
| Noise Reduction | ENC Active Noise-Cancellation |
| Waterproof | Yes |
| Microphone | Yes |
| Control Type | Touch Control Buttons |
| Charging Port | Type-C |
| Style | OWS Ear Hook Headphones (Semi-open) |
| Material | Plastic |
| Maximum Wireless Range | <10m |
| Certification | CE, FCC, RoHS |
Figure 1: Charging Case Dimensions
4. Key Description and Basic Operations
The earbuds feature touch-sensitive controls for various functions:
- Power On: Take the earphones out of the charging case (they will automatically power on and pair), or long press the touch button for 3-5 seconds.
- Power Off: Put the earphones back into the charging case (they will automatically shut down), or long press the touch button for 3-5 seconds.
- Play/Pause: During playback, click the touch button on one of the earphones to pause. Click again to resume playback.
- Answer/Hang Up Call: When there is an incoming call, click the touch button on one of the earphones to answer. Click the touch button on one of the earphones to hang up to end the call.
- Reject Call: When there is an incoming call, long press the earphone touch button for 2-3 seconds to reject the call.
- Previous/Next Song: Double-click the touch button.
- Adjust Volume: Triple-click the touch button.
5. Setup and Pairing
Follow these steps to power on and pair your earbuds with your device:
- Initial Pairing:
- Take both earphones out of the charging case simultaneously. (Note: Both earphones must be taken out at the same time for automatic power-on and pairing initiation).
- Wait for 5 to 30 seconds. You will observe one earphone flashing continuously while the other is off, indicating successful pairing between the earbuds.
- Then, enable the wireless (Bluetooth) function on your phone, search for the corresponding earphone device name (e.g., "MONSTER AI Earphones"), and connect.
Figure 2: Earbuds in Charging Case
6. Operating Instructions
These earbuds are designed for seamless audio and communication.
6.1. Translation Function
The earbuds support real-time translation in 144 languages. To utilize this feature, you will typically need to use a companion mobile application.
- Download the official MONSTER AI Earphones app from your device's app store.
- Follow the in-app instructions to select your desired languages for translation.
- Ensure both earbuds are connected to your phone via Bluetooth for optimal performance.
Figure 3: Real-time Translation in Action
6.2. Audio Experience
Enjoy HIFI Bass and HD Voice with ENC Noise Reduction for clear audio. The OWS (Open Wireless Stereo) ear hook design provides a semi-open earcups type for comfort during extended use.
Figure 4: Directional Sound Transmission
Figure 5: 20° Angle Design for Optimal Sound
Figure 6: 360° Immersion Acoustic Experience
Figure 7: Ergonomic Design for Comfort
7. Troubleshooting
7.1. Pairing Issues
- Single-ear connection problem (one earbud is silent):
- Place both earphones back into the charging case simultaneously.
- Wait a few seconds, then take out the earphones and wait for 5 to 30 seconds.
- Enable the wireless (Bluetooth) function on your phone.
- Find the previously paired device, unpair it.
- Turn off your phone's wireless function, then turn it back on.
- Search for the earphone device again and connect.
- Phone cannot find the earphone device:
- Place both earphones back into the charging case simultaneously.
- Wait a few seconds, then take out the earphones and wait for 5 to 30 seconds.
- Enable the wireless (Bluetooth) function on your phone, search for the corresponding earphone device, and connect.
7.2. General Interference (FCC Notice)
If this equipment causes harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
8. Maintenance
- Keep the earbuds and charging case clean and dry.
- Avoid extreme temperatures and direct sunlight.
- Charge the earbuds regularly to maintain battery health, even if not used frequently.
- Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or immerse in liquids.
9. FCC Compliance Statement
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
Important: Changes or modifications not expressly approved by the manufacturer responsible for compliance could void the user's authority to operate the equipment.
10. User Tips
- For optimal translation accuracy, ensure a stable internet connection on your paired smartphone and speak clearly into the microphone.
- If experiencing issues with translation, verify that the correct source and target languages are selected within the companion app.
- To ensure both earbuds connect properly, always remove them from the charging case simultaneously.
11. Warranty and Support
For warranty information or technical support, please refer to the official MONSTER website or contact their customer service. Keep your purchase receipt for any warranty claims.
A PDF version of the user manual is available for download: User Manual (PDF)





