1. Introduction
Thank you for choosing the Callez USB Single-Ear Headset, Model C700TA. This headset is designed for clear and comfortable communication in various professional and personal settings. It features advanced noise-cancelling technology and convenient in-line controls, making it ideal for online meetings, telework, and more.
2. Product Overview
The Callez C700TA headset combines ergonomic design with high-quality audio components for an optimal user experience.

Figure 2.1: Callez C700TA USB Single-Ear Headset. This image shows the overall design of the headset, highlighting its single earpiece and flexible microphone boom.
Key Components:
- Adjustable Headband: Ensures a secure and comfortable fit for various head sizes.
- Soft Memory Foam Earpad: Provides comfort for extended wear and reduces pressure on the ear.
- Flexible and Rotatable Microphone: Can be positioned on either the left or right side and adjusted for optimal voice pickup.
- In-line Control Unit: Features buttons for call answer/end, volume up/down, and microphone mute.
- USB-A Connector: For plug-and-play connectivity to your device.

Figure 2.2: Ergonomic Design. This diagram illustrates the adjustable headband, soft T-pad, protein earpads, rotatable device, and 350° rotatable microphone for comfortable use.
3. Setup
The Callez C700TA headset offers simple plug-and-play functionality.
3.1 Connecting the Headset
- Locate an available USB-A port on your computer (PC or Mac).
- Plug the USB-A connector of the headset into the USB-A port.
- The headset will be automatically recognized by your operating system. No additional drivers are typically required.

Figure 3.1: USB-A Connection. The headset is shown connected to a laptop, demonstrating the simple plug-and-play setup.
3.2 Audio Settings Configuration (If Needed)
If you experience no sound or microphone issues after connecting, you may need to manually select the headset as your default audio device:
- For Windows: Go to Control Panel > Sound > Playback/Recording and select "USB Headphone" as the default device.
- For Mac OS: Go to System Preferences > Sound > Output/Input and select "USB Headphone".

Figure 3.2: USB-A Connection Settings. This diagram illustrates how to select the USB Headphone as the output/input device on both Mac and Windows systems.
4. Operating Instructions
The in-line control unit provides easy access to essential call functions.

Figure 4.1: In-line Control Unit. This image details the call answer/end/cancel button, volume up/down buttons, and microphone mute button.
4.1 In-line Control Functions:
- Call Button (Green Phone Icon): Press to answer an incoming call, end an active call, or cancel a call.
- Volume Up (+) Button: Increases the listening volume.
- Volume Down (-) Button: Decreases the listening volume.
- Microphone Mute Button (Red Microphone Icon): Press to mute or unmute the microphone. The button will illuminate red when muted.
- Teams Button: A dedicated button for Microsoft Teams. Pressing it can bring the Teams window to the foreground, answer/end/cancel Teams calls (with necessary Teams access permissions), or join an ongoing Teams meeting.
Video 4.1: Headset Features and Teams Integration. This video demonstrates the physical features of the headset, including its adjustability, and shows how the Teams button on the in-line control unit functions with Microsoft Teams for call management and meeting participation.
5. Features
5.1 Dual Noise-Cancelling Microphone with ENC Technology
The headset is equipped with two microphones: one for voice pickup and another for environmental noise reduction. Environmental Noise Cancellation (ENC) technology, combined with the A8 algorithm, effectively filters out background noise during calls, ensuring your voice is transmitted clearly to the other party.

Figure 5.1: Dual Noise-Cancelling Microphone. This image shows the dual microphone setup and how ENC technology processes ambient noise for clearer communication.
5.2 Superior Sound Quality
The headset features powerful 28mm speaker drivers that deliver crisp and clear audio, enhancing your listening experience for both calls and multimedia.

Figure 5.2: 28mm Speaker Driver. This diagram illustrates the internal components of the speaker, emphasizing its role in delivering high-quality sound.
6. Compatibility
The Callez C700TA headset offers broad compatibility with various operating systems and communication platforms.
6.1 Operating Systems:
- Windows 2000/7/8/10/XP/Vista
- Mac OS X
6.2 Communication Platforms:
The headset is compatible with leading Unified Communications (UC) platforms, including but not limited to:
- Microsoft Teams
- Zoom
- Skype for Business
- Line

Figure 6.1: Wide Compatibility. This image displays the headset's compatibility with different operating systems and popular communication applications.
7. Maintenance
To ensure the longevity and optimal performance of your Callez C700TA headset, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the headset. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the headset in a cool, dry place when not in use. Avoid extreme temperatures.
- Cable Care: Do not pull on the cable to disconnect the headset. Always grasp the USB connector. Avoid sharp bends or kinks in the cable.
- Microphone Care: Handle the flexible microphone boom gently. Do not force it beyond its natural range of motion.
8. Troubleshooting
If you encounter issues with your Callez C700TA headset, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from headset | Headset not selected as default audio output. | Check your computer's sound settings and select "USB Headphone" as the default output device. |
| Microphone not working | Microphone muted or not selected as default input. | Ensure the microphone mute button is not active (red light off). Check your computer's sound settings and select "USB Headphone" as the default input device. |
| Poor audio quality / Background noise | Microphone not positioned correctly. | Adjust the microphone boom closer to your mouth. Ensure the microphone is not obstructed. |
| Teams button not responding | Microsoft Teams application not running or permissions not granted. | Ensure Microsoft Teams is open and running. Verify that Teams has the necessary access permissions for the headset. |
| Headset uncomfortable | Headband or microphone not adjusted. | Adjust the headband for a snug but not tight fit. Position the microphone for optimal comfort and voice pickup. |
9. Specifications
- Model Name: C700TA
- Connectivity Technology: Wired (USB-A)
- Noise Control: Noise Cancellation (ENC)
- Headphone Jack: USB-A
- Material: Plastic, Leather, Metal
- Product Dimensions: 17 x 7 x 16 cm
- Product Weight: 180 g
- Recommended Use: Calls, Office, Business, Professional
- Control Type: Volume Control (In-line)
- Cable Features: Detachable (referring to the microphone boom's flexibility/rotation, not the main cable)
- Water Resistance Level: Not Waterproof
- Impedance: 32 Ohms
- Ear Placement: On-Ear
- Headphone Form Factor: On-Ear
10. Warranty and Support
The Callez C700TA headset comes with a 45-day money-back guarantee and a 2-year warranty. If you encounter any issues with the product, please contact our customer support through your order history for assistance.