1. Introduction
This manual provides detailed instructions for the proper use, setup, and maintenance of your Sonitum USB Headset, Model B076PQNW99. Designed for clear communication, this headset is suitable for various applications including online meetings, calls, and multimedia consumption. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
2. Product Features
- USB Connectivity: Simple plug-and-play connection for computers and compatible devices.
- Noise-Isolating Microphone: Designed to reduce background noise for clear voice pickup.
- Flexible Microphone Boom: Pivoting microphone with 140-degree movement for optimal positioning.
- Comfortable Ear Pads: Cushioned ear pads for extended wear comfort.
- Inline Controls: Easy access to volume adjustment and microphone mute functions.
- Durable Cable: 6-foot (1.8-2mm) flexible USB cable.
- Wide Compatibility: Works with Windows XP/Vista/7/8/10, Mac OS, and Android tablets.

Figure 2.1: The Sonitum USB Headset, showcasing its on-ear design and flexible microphone boom.
3. Package Contents
Verify that all items are present in the package:
- Sonitum USB Headset (Model B076PQNW99)
- User Manual (this document)

Figure 3.1: The Sonitum USB Headset as packaged, indicating the model and brand.
4. Setup Instructions
Follow these steps to set up your Sonitum USB Headset:
- Connect the Headset: Plug the USB connector of the headset into an available USB port on your computer or compatible device.
- Automatic Driver Installation: Your operating system (Windows, Mac OS) should automatically detect the headset and install the necessary drivers. This process may take a few moments. A notification typically confirms successful installation.
- Select as Default Audio Device:
- For Windows: Go to 'Sound Settings' (right-click the speaker icon in the taskbar), then select 'Sound Control Panel'. Under the 'Playback' tab, select 'USB PnP Sound Device' (or similar) and click 'Set Default'. Repeat this for the 'Recording' tab.
- For Mac OS: Go to 'System Preferences' > 'Sound'. Under the 'Output' and 'Input' tabs, select 'USB PnP Sound Device' (or similar).
- For Applications: Within communication applications (e.g., Skype, Zoom, Microsoft Teams), navigate to their audio settings and ensure the Sonitum USB Headset is selected for both microphone and speaker.

Figure 4.1: The USB connector and inline control unit, facilitating easy connection and audio management.
5. Operating Instructions
5.1 Wearing the Headset
Adjust the headband for a comfortable fit. Position the ear pads over your ears. The microphone boom is designed to be worn on the left side of your head.

Figure 5.1: Close-up view of the comfortable cushioned ear pads, designed for extended use.
5.2 Adjusting the Microphone
Gently bend the flexible microphone boom to position the microphone approximately 1-2 inches (2.5-5 cm) from your mouth. This optimal distance helps ensure clear voice pickup and effective noise isolation. The microphone can pivot up to 140 degrees for storage or when not in use.

Figure 5.2: Detailed view of the flexible microphone with its foam cover, highlighting its adjustability.
5.3 Using Inline Controls
The inline control unit provides convenient access to audio functions:
- Volume Up (+): Press to increase the listening volume.
- Volume Down (-): Press to decrease the listening volume.
- Microphone Mute: Press the microphone icon button to mute or unmute your microphone. An indicator light (if present) may show the mute status.
- Speaker Mute: Press the speaker icon button to mute or unmute the headset speakers.
6. Maintenance
Proper care ensures the longevity of your headset:
- Cleaning: Use a soft, dry cloth to wipe the headset. For ear pads, a slightly damp cloth with mild soap can be used, but ensure they are completely dry before use. Avoid harsh chemicals or abrasive cleaners.
- Cable Care: Avoid sharp bends or excessive pulling on the USB cable. Store the cable neatly when not in use to prevent tangling and damage.
- Storage: Store the headset in a clean, dry place away from extreme temperatures and direct sunlight.
7. Troubleshooting
If you encounter issues with your Sonitum USB Headset, refer to the following common solutions:
7.1 No Sound from Headset
- Check USB Connection: Ensure the USB plug is fully inserted into a working USB port. Try a different USB port.
- Verify Default Device: Confirm the headset is selected as the default playback device in your computer's sound settings (refer to Section 4.3).
- Adjust Volume: Use the inline volume controls and your computer's system volume to ensure the volume is not set to zero or muted. Note that Windows may default to 100% volume upon initial connection; adjust as needed.
- Test on Another Device: Connect the headset to another computer or compatible device to determine if the issue is with the headset or the original device.
7.2 Microphone Not Working
- Check Mute Button: Ensure the microphone mute button on the inline control is not activated.
- Verify Default Device: Confirm the headset is selected as the default recording device in your computer's sound settings (refer to Section 4.3).
- Adjust Microphone Level: In your computer's sound settings (Recording tab), check the microphone level and boost if necessary.
- Application Settings: Ensure the correct microphone is selected within the settings of your communication application (e.g., Skype, Zoom).
7.3 Poor Sound Quality
- Check Connection: A loose USB connection can cause audio distortion.
- Software Interference: Close other applications that might be using audio resources.
- System Resources: Ensure your computer has sufficient processing power and memory for the task.
8. Specifications
| Brand | Sonitum |
| Model Number | B076PQNW99 |
| Connectivity Technology | Wired (USB) |
| Form Factor | On Ear |
| Cable Length | 6 ft (1.8-2 mm) |
| Item Weight | 8.8 ounces |
| Material | Leather (ear pads) |
| Unit Size | 40mm (1.57in) |
| Frequency Response | 20-20,000 Hz |
| Impedance | 32 Ω |
| Sensitivity | 108dB ± 2dB |
| Max Input Power | 100mW |
| Type | Condenser |
| Unit Size | 9x7mm |
| Frequency Response | 50-16,000 Hz |
| Impedance | 1.2K Ω |
| Sensitivity | 58dB ± 2dB |
9. Warranty and Support
For warranty information or technical support, please refer to the official Sonitum website or contact their customer service directly. Keep your purchase receipt as proof of purchase.