Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset Instruction Manual

1. Introduction

This manual provides essential information for the proper use and maintenance of your Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset. Please read these instructions carefully before using the headset to ensure optimal performance and longevity.

Image: Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset, front view.

2. Package Contents

Verify that all items are present in your product packaging:

• Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset
• USB-C Charging Cable
• Ear Cushions (pre-installed or spare set)
• Quick Start Guide (not included in this digital manual)

3. Headset Overview and Controls

Familiarize yourself with the various parts and controls of your headset.

3.1. Headset Diagram

Image: Diagram illustrating the location of controls on the Koss CS340BT QZ headset.

3.2. Control Functions

• ANC Button: Activates or deactivates Active Noise Cancellation.
• Volume Up / Next Track Button: Press briefly to increase volume. Press and hold to skip to the next track.
• Power / Play / Pause / Pair / Answer / End Call Button:
  • Press and hold for 3 seconds to power on/off.
  • Press briefly to play/pause music.
  • Press and hold for 5 seconds to enter Bluetooth pairing mode.
  • Press briefly to answer an incoming call.
  • Press briefly during a call to end it.
• Volume Down / Previous Track Button: Press briefly to decrease volume. Press and hold to go to the previous track.
• Microphone Boom: Adjustable boom microphone for clear voice communication.
• USB-C Charging Port: For charging the headset battery.
• 3.5mm Audio Jack: For wired audio connection (cable not included).

4. Setup

4.1. Charging the Headset

Before first use, fully charge your headset.

1. Connect the supplied USB-C charging cable to the headset's USB-C port.
2. Connect the other end of the cable to a USB power source (e.g., computer USB port, USB wall adapter).
3. The LED indicator will show charging status (refer to LED indicator section in Quick Start Guide for specific colors).
4. Once fully charged, disconnect the cable. A full charge provides up to 30 hours of Bluetooth-only use or 22 hours with ANC enabled.

Image: USB-C charging port.

4.2. Powering On/Off

• To Power On: Press and hold the Power / Play / Pause button for approximately 3 seconds until the LED indicator lights up.
• To Power Off: Press and hold the Power / Play / Pause button for approximately 3 seconds until the LED indicator turns off.

4.3. Bluetooth Pairing

1. Ensure the headset is powered off.
2. Press and hold the Power / Play / Pause button for approximately 5 seconds until the LED indicator flashes rapidly (usually blue and red), indicating pairing mode.
3. On your device (smartphone, computer, etc.), enable Bluetooth and search for available devices.
4. Select "Koss CS340BT QZ" from the list of found devices.
5. Once paired, the LED indicator will typically show a solid blue light or flash slowly.

5. Operation

5.1. Active Noise Cancellation (ANC)

The headset features Active Noise Cancellation to reduce ambient noise.

• Press the ANC Button once to activate ANC. The LED indicator for ANC will illuminate.
• Press the ANC Button again to deactivate ANC. The ANC LED indicator will turn off.

Image: Active Noise Cancellation in action.

5.2. Making and Receiving Calls

The integrated microphone and controls allow for hands-free communication.

• Answer Call: Press the Power / Play / Pause button once when a call comes in.
• End Call: Press the Power / Play / Pause button once during a call.
• Adjust Microphone: Position the flexible microphone boom closer to your mouth for optimal voice clarity. The dual microphone CVC 8.0 technology helps eliminate background noise.

5.3. Music Playback

• Play/Pause: Press the Power / Play / Pause button once.
• Volume Up: Press the Volume Up button once.
• Volume Down: Press the Volume Down button once.
• Next Track: Press and hold the Volume Up button.
• Previous Track: Press and hold the Volume Down button.

5.4. Wired Connection (Optional)

You can use the headset with a 3.5mm audio cable (not included) for a wired connection, bypassing Bluetooth and ANC functionality.

Image: 3.5mm Audio Jack.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the headset. Do not use harsh chemicals or abrasive materials.
• Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
• Ear Cushions: The ear cushions are replaceable. Refer to Koss's official website for replacement parts if needed.

7. Troubleshooting

If you encounter issues, try the following solutions:

8. Specifications

Image: Extended battery life for the Koss CS340BT QZ headset.

9. Warranty and Support

9.1. Limited Warranty

The Koss CS340BT QZ headset comes with a One Year Limited Warranty from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use. For full warranty terms and conditions, please refer to the official Koss website or contact customer support.

9.2. Customer Support

For technical assistance, warranty claims, or further inquiries, please contact Koss customer support:

• Website: Visit the official Koss website for support resources, FAQs, and contact information.
• Email/Phone: Refer to the contact section on the Koss website for specific email addresses or phone numbers.