Introduction
Welcome to the user manual for your new Monster Wireless Earbuds, Model MH12005. This guide provides detailed instructions on how to set up, operate, maintain, and troubleshoot your earbuds to ensure the best possible audio experience. Please read this manual thoroughly before using your device.

Image: Monster Wireless Earbuds (MH12005) with their charging case.
Product Features
- Advanced Bluetooth 5.3: Ensures a stable, low-latency wireless connection for high-quality sound.
- Smart Touch Control: Intuitive touch sensors for easy management of music playback, calls, and voice assistant.
- Extended Playtime: Up to 8 hours of listening on a single charge, with an additional 24 hours provided by the charging case, totaling 32 hours.
- Quick Charge Capability: A 5-minute charge provides approximately 1 hour of playtime, ideal for urgent use.
- IPX6 Waterproof Rating: Designed to resist sweat, water splashes, and light rain, making them suitable for workouts and outdoor activities.
- Clear Call with 4 Mics: Built-in microphones combined with Environmental Noise Cancellation (ENC) technology ensure crisp voice quality during calls.
- Dynamic 10mm Drivers: Delivers powerful deep bass and clear audio across all frequencies.
- Lightweight Design: Ergonomically designed for a comfortable and secure fit during extended wear.

Image: Internal structure of the earbud, highlighting the 10mm dynamic driver.

Image: Earbuds depicted with feathers, emphasizing their lightweight nature.
Package Contents
Upon unboxing your Monster Wireless Earbuds, please ensure all the following items are present:
- Monster Wireless Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- Multiple Sizes of Ear Tips
- Quick Start Guide / User Manual

Image: All items included in the product packaging.
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case. Connect the provided USB-C cable to the charging port on the case and a compatible USB power source. The indicator lights on the case will show the charging status.
- Place earbuds into the charging case to charge them.
- The case provides multiple charges for the earbuds.
- A quick 5-minute charge of the earbuds can provide up to 1 hour of playtime.

Image: Earbuds charging in the case, illustrating fast charge capability.
2. Bluetooth Pairing
- Ensure the earbuds are charged.
- Open the charging case. The earbuds will automatically enter pairing mode, and their indicator lights will flash.
- On your mobile device, go to Bluetooth settings and turn Bluetooth on.
- Search for available devices and select "Monster Achieve 300 AirLinks" from the list.
- Once connected, the earbud indicator lights will stop flashing, and your device will confirm the connection.

Image: Bluetooth 5.3 connection process shown on a smartphone screen.
3. Wearing the Earbuds
For optimal sound quality and comfort, ensure the earbuds are worn correctly. Choose the ear tips that provide a snug fit in your ear canal.
- Insert the earbud into your ear and gently twist it forward until it sits securely.
- Ensure the microphone is facing downwards for clear call quality.
- Incorrect wearing can affect sound quality and call performance.

Image: Visual guide demonstrating the correct and incorrect ways to wear the earbuds.
Operating Instructions
Smart Touch Controls
The Monster Wireless Earbuds feature intuitive touch controls on each earbud. The functions can vary slightly between the left and right earbud.

Image: Diagram illustrating various touch control gestures and their corresponding functions.
| Action | Function |
|---|---|
| Single Tap (L/R) | Play/Pause Music, Answer/End Call |
| Double Tap (Right) | Next Track |
| Double Tap (Left) | Previous Track |
| Long Press (Right) | Volume Up |
| Long Press (Left) | Volume Down |
| Triple Tap (L/R) | Activate Voice Assistant |
| Long Press (Incoming Call) | Reject Call |
Maintenance and Care
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use abrasive cleaners or solvents.
- Ear Tips: Remove ear tips periodically and clean them with water and mild soap. Ensure they are completely dry before reattaching.
- Charging Contacts: If charging issues occur, gently clean the charging contacts on both the earbuds and the case with a cotton swab.
- Water Resistance: While IPX6 rated, avoid submerging the earbuds in water. Dry them thoroughly if they get wet from sweat or rain before placing them back in the charging case.
- Storage: When not in use, store the earbuds in their charging case to protect them and keep them charged. Store in a cool, dry place away from extreme temperatures.

Image: Earbuds demonstrating their IPX6 water resistance.
Troubleshooting
If you encounter any issues with your Monster Wireless Earbuds, please refer to the following common problems and solutions:
No Sound from Earbuds / One Earbud Not Working
- Ensure both earbuds are charged.
- Check if the earbuds are properly paired with your device. Try re-pairing them.
- Clean the charging contacts on the earbuds and inside the case.
- Ensure the earbuds are worn correctly and securely in your ears.
Earbuds Not Pairing with Device
- Make sure Bluetooth is enabled on your device.
- Ensure the earbuds are in pairing mode (indicator lights flashing).
- Forget the device from your phone's Bluetooth list and try pairing again.
- Move the earbuds closer to your device.
- Restart your mobile device.
Charging Case Not Charging
- Check the USB-C cable and power adapter for damage.
- Ensure the charging cable is securely connected to both the case and the power source.
- Try a different USB-C cable or power source.
Poor Call Quality
- Ensure the earbuds are worn correctly, with the microphones facing downwards.
- Check for obstructions near the microphones.
- Ensure you are in an area with good network coverage if using for phone calls.

Image: User wearing an earbud, illustrating the position of the built-in microphones for clear communication.
Specifications
| Feature | Detail |
|---|---|
| Model Name | MH12005 |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Ear Placement | In Ear |
| Form Factor | In Ear |
| Noise Control | None (Features ENC for calls) |
| Included Components | Wireless Charging Case |
| Material | Plastic |
| Charging Time (Quick Charge) | 5 minutes for 1 hour playtime |
| Compatible Devices | Cellphones |
| Water Resistance Level | IPX6 Water Resistant |
| Frequency Range | 20Hz-20KHz |
| Impedance | 30 Ohm |
| Battery Average Life | 32 Hours (with charging case) |
| Battery Type | Lithium Polymer (included, rechargeable) |
Warranty and Support
For information regarding product warranty, please refer to the warranty card included in your product packaging or visit the official Monster website. If you require further assistance or have questions not covered in this manual, please contact Monster customer support through their official channels.
Keep your purchase receipt for warranty claims.





