Introduction
Thank you for choosing the Monster Open Ear AC339 Earbuds. These open-ear wireless earbuds are designed to provide a comfortable listening experience with high-quality stereo sound, long battery life, and convenient touch controls. This manual will guide you through the setup, operation, maintenance, and troubleshooting of your new earbuds to ensure optimal performance and longevity.
Image: The Monster Open Ear AC339 Earbuds, showing both earbuds and their charging case. The earbuds are a light purple color, designed to clip onto the ear, and the charging case features a digital display for battery level.
Package Contents
Please check the package for the following items:
- Monster Open Ear AC339 Earbuds (Left and Right)
- Wireless Charging Case
- USB Charging Cable (Type-C)
- User Manual (this document)
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case. The case features a digital display to show the battery level.
- Place the earbuds into the charging case. Ensure they are correctly seated.
- Connect the USB charging cable to the charging port on the case and to a power source (e.g., USB wall adapter, computer USB port).
- The digital display on the case will indicate charging status. A full charge provides up to 40 hours of total playback time with the charging case.
Image: The Monster Open Ear AC339 Earbuds and their open charging case, illustrating the "40 Hrs" extended battery life and the digital display on the case.
2. Pairing with Your Device
The earbuds will automatically enter pairing mode when taken out of the charging case.
- Open the charging case and remove both earbuds. They will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, computer), go to the Bluetooth settings.
- Search for "Monster Open Ear AC339" in the list of available devices.
- Select it to connect. Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.
Image: A smartphone displaying its Bluetooth settings, showing "Monster Open Ear AC339" as a connected device, with the earbuds and charging case nearby.
3. How to Wear
The Monster Open Ear AC339 earbuds feature an open-ear clip design for comfortable and secure fit.
- Gently place the earbud onto your ear, positioning the speaker part over your ear canal.
- Rotate the earbud slightly to ensure the clip securely and comfortably rests behind your ear.
- Adjust for the best sound quality and a stable fit. The lightweight design (5.2g per earbud) ensures comfort during extended wear.
Image: A diagram illustrating the correct way to wear the Monster Open Ear AC339 earbuds, showing the earbud being placed onto the ear and rotated for a secure fit.
Image: A woman wearing a Monster Open Ear AC339 earbud, with text indicating "Each Earbud Weighs 5.2g", emphasizing the lightweight design.
Operating Instructions
The Monster Open Ear AC339 Earbuds feature intuitive touch controls on each earbud for easy management of calls and music.
Image: A visual guide to the touch controls on the Monster Open Ear AC339 earbuds, detailing actions for both left and right earbuds.
Touch Control Functions:
| Action | Left Earbud (L) | Right Earbud (R) |
|---|---|---|
| Answer/End Call | Double-click (L or R) | |
| Reject Call | Hold for 2 seconds (L or R) | |
| Play/Pause Music | Double-click (L or R) | |
| Previous Song | Triple-click | N/A |
| Next Song | N/A | Triple-click |
| Volume Down | Single-click | N/A |
| Volume Up | N/A | Single-click |
| Activate Voice Assistant | Hold for 2 seconds (L or R) | |
Audio Quality and Experience:
The AC339 earbuds deliver rich, deep bass, crystal-clear vocals, and pristine highs for an immersive stereo sound experience.
Image: An exploded diagram showing the internal components of the Monster Open Ear AC339 earbud, highlighting the driver and sound-producing elements, with text "Excellent Sound Quality".
The open-ear design allows you to stay aware of your surroundings while enjoying your audio, making them ideal for outdoor activities or situations where situational awareness is important.
Image: Two individuals, one on a bicycle and another looking at a phone, both wearing Monster Open Ear AC339 earbuds, illustrating the "Stay Connected" feature that allows awareness of surroundings.
Maintenance
Cleaning Your Earbuds:
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Ensure charging contacts on both earbuds and case are clean and dry for proper charging.
Water Resistance (IPX6):
The Monster Open Ear AC339 Earbuds are IPX6 water-resistant, meaning they can withstand strong jets of water from any direction. This makes them suitable for workouts and light rain.
- Do not submerge the earbuds in water.
- Ensure the charging port is dry before charging.
- After exposure to sweat or rain, wipe the earbuds dry before placing them back in the charging case.
Image: Close-up of Monster Open Ear AC339 earbuds with water droplets on their surface, accompanied by icons indicating IPX6 Waterproof, Not Afraid of Rain, Sweat-proof, and Do Not Soak.
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.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Earbuds not charging |
|
| Earbuds not pairing/connecting |
|
| No sound or low volume |
|
| Intermittent connection/sound drops |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | AC339 (Item Model Number: E98) |
| Brand | Monster |
| Connectivity Technology | Wireless (Bluetooth 6.0) |
| Ear Placement | Open Ear |
| Form Factor | True Wireless |
| Water Resistance Rating | IPX6 |
| Battery Life (Earbuds) | Up to 8 hours (single charge) |
| Total Playback Time (with Case) | Up to 40 hours |
| Charging Time | Approx. 2 hours (for case and earbuds) |
| Control Type | Touch Control |
| Earbud Weight | 5.2g (each) |
| Color | Purple |
| Included Components | Wireless Charging Case |
Warranty and Support
Monster products are designed and manufactured to the highest quality standards. For information regarding warranty coverage, please refer to the warranty card included with your product or visit the official Monster website.
For customer service and technical support, please contact Monster's dedicated after-sales support team. They are ready to assist with any inquiries or feedback you may have.
Note: Warranty terms and support contact information may vary by region. Please consult your product packaging or the manufacturer's official website for the most accurate and up-to-date details.
