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High-quality mono QD headset with strong noise suppression.
2406-820-204
Biz 2400 II QD Mono NC 3 in 1 - Headset - Head-band - Office...
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2406-820-204
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2406-820-204-Biz 2400 II QD Mono NC 3 in 1 - Headset - Head-band - Office/Call center - Black - Silver - Monaural - China is a professional-grade monaural headset designed for high-demand office and call center environments. This headset integrates a single-ear speaker with a noise-cancelling condenser microphone and a durable head-band construction, delivering clear audio output and reliable voice input during extended use. The 3-in-1 wearing style provides flexibility for various user preferences and all-day comfort.
The headset utilizes a Quick Disconnect (QD) cable for connectivity, supporting seamless integration with desk phones, unified communications, and contact center systems that are compatible with QD standards. It offers a frequency response of 100 Hz to 10 kHz for speech-optimized clarity, and features advanced noise-cancelling (NC) technology for productive communication in shared workspaces. Ideal for office, call center, and unified communications deployments, this headset supports streamlined workflows and high-quality audio in busy professional settings.
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 2406-820-204 |  930-29-503-101 |  6593-829-409 |  24089-989-999 |  7599-838-199 | |
|---|---|---|---|---|---|
| Product Type | Audio Equipment | Audio Equipment | Audio Equipment | Audio Equipment | Audio Equipment |
| Audio Device Type | Headset | Headset | Headset | Headset | Headset |
| Microphone Type | Condenser | Condenser | Dynamic | Condenser | Condenser |
| Speaker Type | N/A | N/A | Active | N/A | Active |
| Form Factor | Head-band | Desktop | Portable | Portable | Portable |
| Use Case | Unified Communications / Conference Room / Office / Call Center | Unified Communications / Conference Room / Office | Unified Communications / Conference Room / Office | Unified Communications / Conference Room / Streaming / Broadcast / Remote Work | Unified Communications |
| Channel Configuration | Mono | Stereo | Mono | Stereo | Stereo |
| Connectivity | Quick Disconnect (QD) | USB | USB / Bluetooth | USB | USB / Bluetooth |
| Input Types | Quick Disconnect (QD) | USB | USB / Bluetooth | USB | USB / Bluetooth |
| Output Types | Quick Disconnect (QD) | USB | Speaker / 3.5mm | USB | 3.5mm / Bluetooth |
| Power Output (if applicable) | N/A | N/A | N/A | N/A | N/A |
| Power Source | N/A | USB-Powered | USB-Powered / Battery | USB-Powered | Battery / USB-Powered |
| Frequency Response | 100 Hz – 10 kHz | 150 Hz – 6.8 kHz (speaker), 150 Hz – 7 kHz (microphone) | 100 Hz – 10 kHz (Speaker), 150 Hz – 6.8 kHz (Microphone) | 20 Hz – 20 kHz (Speaker), 100 Hz – 14 kHz (Microphone) | 20 Hz – 20 kHz (music), 150 Hz – 6.8 kHz (calls) |
| Signal Processing | Noise Suppression | DSP / AEC / Noise Suppression | DSP / Noise Suppression | DSP / AEC / Noise Suppression | DSP / AEC / Noise Suppression / AGC |
| Audio Codecs Supported | N/A | N/A | SBC | N/A | SBC |
| Mounting Option | N/A | N/A | N/A | N/A | N/A |
| Control Interface | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons |
| Wireless Support | No | No | Bluetooth | No | Bluetooth |
| Product Name | 2406-820-204-Biz 2400 II QD Mono NC 3 in 1 | 930-29-503-101-PRO 930 Duo MS - Headset - Head-band - Office/Call center - Black - Binaural - China | Jabra Evolve 65 UC mono - Headset (6593-829-409) | Jabra Evolve2 40 UC Stereo - Headset (24089-989-999) | Jabra Evolve 75 UC Stereo Headset Head-band Bluetooth Black (7599-838-199) |
| Height | 6.89 | 6.89 | 6.73 | 2.25 | 6.89 |
| Width | 5.91 | 6.77 | 6.77 | 6.37 | 7.09 |
| Depth | 2.36 | 2.36 | 2.28 | 7.68 | 2.32 |
| Weight | 0.14 | 0.19 | 0.2 | 0.39 | 0.42 |
High-quality mono QD headset with strong noise suppression.
Reliable desk phone compatibility and clear audio.
Comfortable for extended support shifts.
Durable construction suited for busy call centers.
Consistent voice clarity across devices.
Professional mono performance in enterprise environments.
Trusted communication tool for daily operations.
The Biz 2400 II QD Mono NC 3-in-1 headset offers an adjustable headband, superior noise-canceling microphone, QD (quick disconnect) connection, and three wearing styles (headband, earhook, and over-the-ear).
The advanced noise-canceling microphone filters out up to 95% of background noise, ensuring clear voice transmission in busy office or call-center environments.
The quick-disconnect (QD) cable is compatible with most desk phones equipped with QD ports and can be used with USB or 3.5 mm adapters for softphone and mobile device integration.
Yes, the 3-in-1 design allows tool-free conversion between headband, earhook, and over-the-ear wearing styles for personalized comfort.