Introduction
This manual provides detailed instructions for the Monster Open Ear AC312 Headphones, model E35-WH. Please read this manual thoroughly before using the product to ensure proper operation and to maximize its lifespan. These open-ear wireless earbuds are designed for comfort and situational awareness, featuring Bluetooth 5.4 connectivity, ENC noise-cancelling microphone, and extended battery life.
Package Contents
Verify that all items are present in the package:
- Monster Open Ear AC312 Headphones (Left and Right Earbuds)
- Wireless Charging Case
- USB-C Charging Cable
- User Manual (this document)
Image: Monster Open Ear AC312 Headphones and their charging case, both in white, illustrating the complete product package.
Product Overview
The Monster Open Ear AC312 Headphones are designed for comfort and awareness. Key features include an ergonomic ear hook, ultra-light design, and soft silicone material for extended wear.
Image: A woman wearing the Monster Open Ear AC312 Headphones, demonstrating the open-ear design and comfortable fit. Insets show the ergonomic ear hook, ultra-light construction, and soft silicone material.
Components:
- Earbud Body: Houses the speaker and internal components.
- Ear Hook: Secures the earbud over the ear.
- Touch Control Area: Located on the outer surface of each earbud for various functions.
- Microphone: Integrated for calls and voice commands, featuring ENC noise cancellation.
- Charging Contacts: On the earbuds and inside the charging case.
- Charging Case: Stores and recharges the earbuds, with LED indicators for battery status.
Setup
1. Charging the Headphones and Case
Before first use, fully charge the headphones and the charging case.
- Place both earbuds into the charging case. Ensure they are correctly seated and the charging contacts align.
- Connect the USB-C charging cable to the charging port on the case and the other end to a USB power adapter (not included) or a computer's USB port.
- The LED indicators on the charging case will illuminate to show charging status. Once fully charged, the indicators will remain solid or turn off, depending on the model.
- A full charge provides up to 8 hours of playtime per charge, with the charging case extending total playtime up to 32 hours. A 5-minute quick charge can provide 1 hour of listening time.
Image: The Monster Open Ear AC312 Headphones and their charging case, illustrating the extended playback time of up to 32 hours with the case's 400mAh battery capacity.
2. Pairing with a Bluetooth Device
The headphones use Bluetooth 5.4 for a faster and more stable connection.
- Open the charging case. The earbuds will automatically enter pairing mode, indicated by a flashing LED light on the earbuds.
- On your device (smartphone, tablet, computer), enable Bluetooth.
- Search for new Bluetooth devices. Select "Monster AC312" from the list of available devices.
- Once connected, the LED indicator on the earbuds will stop flashing. You will hear an audible confirmation.
- The headphones will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.
Image: A detailed view of a Monster Open Ear AC312 earbud, overlaid with a diagram illustrating the upgraded Bluetooth 5.4 chip, emphasizing faster and more stable connectivity.
Operating Instructions
The Monster Open Ear AC312 Headphones feature intuitive touch controls.
Music Playback:
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double tap on the left earbud.
- Volume Up: Triple tap on the right earbud.
- Volume Down: Triple tap on the left earbud.
Call Management:
The ENC noise-cancelling microphone ensures clear calls by filtering environmental noise.
- Answer/End Call: Single tap on either earbud.
- Reject Call: Press and hold either earbud for 2 seconds.
Image: A man smiling while wearing the Monster Open Ear AC312 Headphones, illustrating the clear call quality provided by the ENC noise-cancelling technology.
Voice Assistant:
- Activate Voice Assistant: Press and hold either earbud for 3 seconds.
Situational Awareness:
The open-ear design allows you to enjoy audio while remaining aware of your surroundings, enhancing safety during activities like cycling or running.
Image: A cyclist wearing Monster Open Ear AC312 Headphones, demonstrating how the open-ear design allows for awareness of environmental sounds, such as an approaching car, for safety.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your Monster Open Ear AC312 Headphones.
- Cleaning: Use a soft, dry, lint-free cloth to clean the earbuds and charging case. Do not use abrasive cleaners, alcohol, or chemical solvents.
- Water Resistance: The headphones are IPX5 water resistant, meaning they can withstand splashes and sweat. Do not submerge them in water or expose them to strong jets of water. Dry them thoroughly after exposure to moisture.
- 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.
- Charging Contacts: Periodically check and gently clean the charging contacts on both the earbuds and the case to ensure a good connection.
Image: A woman with wet hair wearing the Monster Open Ear AC312 Headphones, illustrating their IPX5 water resistance, making them suitable for sports and exercise.
Troubleshooting
If you encounter issues with your Monster Open Ear AC312 Headphones, refer to the solutions below:
| Problem | Possible Solution |
|---|---|
| Headphones do not turn on. | Ensure the earbuds are charged. Place them in the charging case and connect the case to power. |
| Cannot pair with device. |
|
| No sound or low volume. |
|
| Intermittent connection. |
|
| One earbud not working. |
|
Specifications
| Feature | Detail |
|---|---|
| Model | E35-WH (AC312) |
| Connectivity | Bluetooth 5.4 |
| Ear Placement | Open Ear |
| Driver Size | 16mm Large Drivers |
| Noise Control | Environmental Noise Cancellation (ENC) for Mic |
| Water Resistance | IPX5 (Waterproof) |
| Battery Life (Earbuds) | Up to 8 hours per charge |
| Total Playtime (with Case) | Up to 32 hours |
| Charging Port | USB-C |
| Control Type | Touch Control |
| Frequency Range | 20Hz - 20,000Hz |
| Material | Plastic |
| Dimensions (Parcel) | 13.3 x 11.4 x 4.7 cm |
| Weight (Parcel) | 190 g |
Warranty and Support
Monster products are designed and manufactured to the highest quality standards. For warranty information and customer support, please refer to the official Monster website or contact their customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.
Online Support: Visit the official Monster website for FAQs, product registration, and support resources. www.monsterproducts.com/support
Contact Information: Refer to the Monster website for regional contact details for customer service.
Return Policy: The buybox winner indicates a 30-day return policy for refund/replacement. Please check with your retailer for specific return procedures.
