Introduction
Thank you for choosing the Monster Open Ear AC322 Bluetooth Headset. This manual provides detailed instructions for setting up, operating, and maintaining your new headset. Please read this manual thoroughly before use to ensure proper function and to maximize your listening experience.

Image: The Monster Open Ear AC322 Bluetooth Headset, consisting of two open-ear earbuds and their oval-shaped charging case, all in black.
Package Contents
Verify that all items are present in your package:
- Monster Open Ear AC322 Bluetooth Headset (Left and Right Earbuds)
- Wireless Charging Case
- USB Charging Cable (Type-C)
- User Manual (this document)
Product Overview
The Monster Open Ear AC322 headset features an open-ear design for situational awareness and comfort. Each earbud is equipped with an adjustable ear hook for a secure fit and touch controls for easy operation.

Image: An overview of the Monster Open Ear AC322 headset highlighting key features: Bluetooth 5.4, IPX5 Waterproof, Comfort Fit, Long Battery Life, Clear Call, and Angle Adjustable design.
Components
- Earbuds: Left and Right, with integrated ear hooks and touch control areas.
- Charging Case: Houses and charges the earbuds, with an LED indicator for battery status.
Setup
1. Charging the Headset
Before first use, fully charge the headset and charging case.
- Place both earbuds into the charging case.
- Connect the USB charging cable to the charging port on the case and to a power source.
- The LED indicator on the case will show charging status. A full charge typically takes approximately 1.5-2 hours.

Image: The Monster Open Ear AC322 earbuds inside their open charging case, illustrating the 36-hour battery life capability.
2. Bluetooth Pairing
The headset uses Bluetooth 5.4 for a stable and fast connection.
- Open the charging case. The earbuds will automatically enter pairing mode, indicated by a flashing LED on the earbuds.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for available devices and select "Monster Open Ear AC322" from the list.
- Once connected, the LED indicator on the earbuds will turn off or show a steady light, and you will hear a confirmation tone.

Image: A Monster Open Ear AC322 earbud and its charging case next to a smartphone displaying its Bluetooth settings, showing "Monster Open Ear AC322" as connected.

Image: A visual representation of the Monster Open Ear AC322 headset's wide compatibility and easy one-click pairing with various devices like laptops and smartphones.
Operating Instructions
1. Wearing the Headset
The AC322 features an ergonomic, open-ear design with adjustable ear hooks for a secure and comfortable fit.
- Gently place the earbud over your ear, positioning the speaker near your ear canal without inserting it directly.
- Adjust the ear hook to fit snugly around the back of your ear. The ear hook can be adjusted by 45 degrees and the earbud angle by 25 degrees for optimal comfort and stability.

Image: A diagram illustrating the adjustable design of the Monster Open Ear AC322, showing 45-degree ear hook rotation and 25-degree earbud angle adjustment for a customizable fit.

Image: A person wearing the Monster Open Ear AC322 headset, demonstrating its ergonomic, secure, and ultra-light fit for comfortable, open-ear listening.

Image: A diagram showing the adjustable ear hangers of the Monster Open Ear AC322, designed to ensure a secure fit and prevent falling during activities.
2. Touch Controls
The earbuds feature touch-sensitive controls for managing audio and calls.
| Action | Left Earbud | Right Earbud |
|---|---|---|
| Play/Pause | Single Tap | Single Tap |
| Next Track | Double Tap | Double Tap |
| Previous Track | Triple Tap | Triple Tap |
| Answer/End Call | Single Tap | Single Tap |
| Reject Call | Press and Hold (2s) | Press and Hold (2s) |
| Activate Voice Assistant | Press and Hold (3s) | Press and Hold (3s) |
Note: Volume control may need to be adjusted directly on your connected device.
3. Clear Communication
The headset is designed for clear communication, even in noisy environments.

Image: A man wearing a Monster Open Ear AC322 earbud, talking on his phone, illustrating the clear call quality feature.
4. Open-Ear Design and Situational Awareness
The open-ear design allows you to hear your surroundings while enjoying audio, enhancing safety in various environments.

Image: A man driving a truck while wearing a Monster Open Ear AC322 earbud, demonstrating the ability to stay aware of surroundings for added safety.
Maintenance
1. Cleaning
Regular cleaning helps maintain performance and hygiene.
- Wipe the earbuds and charging case with a soft, dry, lint-free cloth.
- Avoid using abrasive materials, solvents, or chemical cleaners.
2. Water Resistance (IPX5)
The AC322 headset has an IPX5 waterproof rating, making it resistant to sweat and light rain. It is not designed for submersion in water.
- Do not intentionally submerge the earbuds or charging case in water.
- If exposed to sweat or rain, wipe them dry before placing them back in the charging case or charging.

Image: The Monster Open Ear AC322 earbuds and charging case with water droplets, illustrating their IPX5 waterproof rating.

Image: A woman exercising outdoors with the Monster Open Ear AC322 earbud, highlighting its IPX5 waterproof rating for sweat and rain resistance during sports.
3. Storage
Store the headset in its charging case when not in use to protect it and keep it charged.
Troubleshooting
If you encounter issues with your Monster Open Ear AC322 headset, refer to the following common solutions:
- No Power: Ensure the charging case and earbuds are fully charged.
- Cannot Pair:
- Ensure Bluetooth is enabled on your device.
- Make sure the earbuds are in pairing mode (flashing LED).
- Forget the device from your phone's Bluetooth list and try pairing again.
- Ensure the earbuds are within the effective Bluetooth range (typically 10 meters).
- No Sound/Low Volume:
- Check the volume level on both your device and the earbuds.
- Ensure the earbuds are properly connected to your device.
- Clean any debris from the speaker grilles.
- Intermittent Connection:
- Move closer to your connected device.
- Avoid environments with strong Wi-Fi or other wireless interference.
- Restart both the earbuds (by placing them in the case and taking them out) and your device.
Specifications
Detailed technical specifications for the Monster Open Ear AC322 Bluetooth Headset:
| Feature | Specification |
|---|---|
| Model Name | AC322 (E65) |
| Brand | Monster |
| Connectivity Technology | Wireless (Bluetooth 5.4) |
| Ear Placement | Open Ear |
| Control Method | Touch |
| Battery Life | Up to 36 Hours (with charging case) |
| Water Resistance Level | IPX5 (Waterproof) |
| Material | Plastic or Silicone |
| Item Weight | 6.7 ounces (0.19 Kilograms) |
| Included Components | Wireless Charging Case |
| Compatible Devices | Smartphones, Laptops, Tablets, Desktops, Gaming Consoles, Smart Speakers, Televisions, Car Audio Systems, Cellphones |
Warranty and Support
For warranty information or technical support, please refer to the documentation included with your purchase or visit the official Monster website. Keep your proof of purchase for warranty claims.
For further assistance, you may contact Monster customer support through their official channels.





