Monster Open Ear AC339 Earbuds User Manual

1. Introduction

Thank you for choosing the Monster Open Ear AC339 Earbuds. These earbuds are designed to provide a comfortable and immersive audio experience while allowing you to stay aware of your surroundings. Featuring Bluetooth 6.0, IPX6 water resistance, and extended battery life, they are ideal for daily use, workouts, and calls.

Image: Monster Open Ear AC339 Earbuds and their charging case, showcasing the sleek black design and digital display on the case.

2. What's in the Box

Your Monster Open Ear AC339 Earbuds package includes the following items:

• Monster Open Ear AC339 Earbuds (Left and Right)
• Wireless Charging Case
• USB-C Charging Cable (not explicitly listed but standard for charging cases)
• User Manual (this document)

3. Product Features

• Premium Audio & Extreme Comfort: These open-ear earbuds provide an extremely comfortable wearing experience with their clamp-over design, ensuring a snug fit without added pressure. Paired with high-quality audio, they deliver clear and immersive sound, making every listening session enjoyable and effortless.
  

  Image: A woman wearing a Monster Open Ear AC339 earbud, highlighting its lightweight design of 5.2g per earbud.

• Multi-Function Touch Control: Monster Open Ear AC339 is specially designed with simple button control function, allowing you to easily switch between answering and hanging up calls, voice assistant, controlling music and managing other functions with just a touch. Whether you are driving, exercising or running, this provides great convenience and safety.
  

  Image: A close-up of the Monster Open Ear AC339 earbud, illustrating the sensitive binaural touch control area for one-tap entry to musical experience.

• IPX6 Waterproof: These open ear earbuds are IPX6 water-resistant, protecting them from strong jets of water from any direction. This makes them perfect for any weather conditions or intense workouts, where sweat and water exposure are common.
  

  Image: Monster Open Ear AC339 Earbuds with water droplets, demonstrating their IPX6 water resistance suitable for rain and sweat.

• Ultra-long Battery Life & Battery Level Reminder: Monster Open Ear AC339 Headphones boast a battery life of up to 40 hours, providing uninterrupted usage for extended periods. Featuring a digital display, they offer real-time battery level indicators, ensuring you always know how much power remains.
  

  Image: The Monster Open Ear AC339 Earbuds and their charging case, illustrating the 40-hour extended battery life and the digital display on the case.

4. Setup

4.1 Charging the Earbuds and Case

Before first use, fully charge the earbuds and the charging case. Connect the USB-C charging cable to the charging port on the case and a power source. The digital display on the case will show the battery level. A full charge provides up to 40 hours of total playback time with the charging case, and the earbuds themselves offer 8 hours on a single charge. The case supports two-hour fast charging.

4.2 How to Wear

The Monster Open Ear AC339 Earbuds feature an open-ear clip design for comfortable and secure fit.

1. Gently place the earbud onto your ear.
2. Rotate the earbud to ensure the clip sits comfortably and securely around your ear, providing a stable fit without pressure.

Image: A diagram illustrating the correct method to wear the Monster Open Ear AC339 earbuds, showing the rotation for a comfortable and secure fit.

4.3 Bluetooth Pairing

To connect your earbuds to a device:

1. Ensure the earbuds are charged and inside the charging case.
2. Open the charging case. The earbuds will automatically enter pairing mode.
3. On your device (smartphone, tablet, etc.), go to Bluetooth settings and turn Bluetooth on.
4. Look for "Monster Open Ear AC339" in the list of available devices and select it to connect.
5. Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.

Image: A smartphone screen displaying the Bluetooth settings, showing "Monster Open Ear AC339" as a connected device, next to the earbuds and charging case.

5. Operating Instructions

5.1 Touch Controls

The Monster Open Ear AC339 Earbuds feature sensitive touch controls on both the left (L) and right (R) earbuds. Refer to the diagram below for specific functions:

Image: A detailed diagram illustrating the touch control functions for both the left and right Monster Open Ear AC339 earbuds, including call management, music playback, and voice assistant activation.

5.2 Audio Sharing

The open-ear design allows for a unique audio sharing experience, enabling you to enjoy your music while still being aware of your surroundings or sharing the audio with a companion.

Image: Two individuals, a man and a woman, sitting close together, both wearing Monster Open Ear AC339 Earbuds, illustrating the concept of audio sharing and companionship.

6. Maintenance

6.1 Cleaning

To maintain optimal performance and hygiene, regularly clean your earbuds and charging case:

• Use a soft, dry, lint-free cloth to wipe the earbuds and charging case.
• Do not use abrasive cleaners, alcohol, or chemical sprays.
• Avoid getting moisture in any openings.

6.2 Water Resistance

The earbuds are IPX6 water-resistant, meaning they can withstand strong jets of water. This makes them suitable for workouts and light rain. However, they are not designed for submersion in water. Do not soak the earbuds or expose them to high-pressure water streams for extended periods.

7. Troubleshooting

If you encounter issues with your Monster Open Ear AC339 Earbuds, try the following solutions:

• No Sound:
  • Ensure earbuds are charged.
  • Check Bluetooth connection on your device.
  • Increase volume on both earbuds and your device.
  • Try re-pairing the earbuds.
• Earbuds Not Pairing:
  • Ensure earbuds are charged and in pairing mode (open case).
  • Turn off and on Bluetooth on your device.
  • Forget the device in your Bluetooth settings and try pairing again.
  • Ensure no other devices are actively connected to the earbuds.
• Intermittent Connection:
  • Ensure your device is within the effective Bluetooth range (typically 10 meters/33 feet).
  • Avoid physical obstructions between the earbuds and your device.
  • Minimize interference from other wireless devices.
• Earbuds Not Charging:
  • Ensure the charging cable is securely connected to both the case and the power source.
  • Check if the charging contacts on the earbuds and inside the case are clean and free of debris.
  • Try a different charging cable or power adapter.

8. Specifications

9. Warranty and Support

At Monster, your satisfaction is our priority. We are committed to providing high-quality products and dedicated after-sales support.

For any inquiries, feedback, or assistance with your Monster Open Ear AC339 Earbuds, please do not hesitate to reach out to our professional customer service team. We are ready to assist you and ensure a seamless shopping experience, finding solutions that meet your needs.

Please refer to your purchase documentation or the official Monster website for specific warranty terms and contact information.