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2499-823-209
Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Cal...
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2499-823-209-Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China is a professional-grade binaural (double-ear) headset specifically designed for office and call center environments. This high-quality headset features both USB and Bluetooth connectivity, allowing seamless integration with unified communications (UC) systems, desktop computers, and mobile devices. With its headband design, the Black and Silver 2499-823-209-Biz 2400 II USB Duo BT MS provides comfortable, all-day wearability and hi-fi stereo sound output for clear voice reproduction, enhancing productivity and conversation clarity in busy workplace settings.
Equipped with a noise-canceling condenser microphone and advanced digital signal processing (DSP), the headset delivers exceptional voice transmission while reducing background noise in open office or call center deployments. The 2499-823-209-Biz 2400 II USB Duo BT MS supports stereo audio (binaural), offers a frequency response of 80 Hz – 16 kHz, and is powered via USB or built-in battery. It is compatible with Microsoft Skype for Business and leading softphones, ensuring effortless call control and native plug-and-play performance for users in boardrooms, UC deployments, and meeting spaces.
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 2499-823-209 |  6640-906-300 |  2406-720-209 |  24089-889-999 |  2389-820-109 | |
|---|---|---|---|---|---|
| Product Type | Audio Equipment | Audio Equipment | Audio Equipment | Audio Equipment | Audio Equipment |
| Audio Device Type | Headset | Headset | Headset | Headset | Headset |
| Microphone Type | Condenser | Condenser | Condenser | Boom / N/A | Condenser |
| Speaker Type | N/A | N/A | N/A | Active | N/A |
| Form Factor | Head-band | Portable | Desktop | Desktop | On-Ear / Headband |
| Use Case | Office / Call Center / Unified Communications / Meeting Spaces | Unified Communications | Unified Communications / Conference Room / Call Center | Unified Communications / Conference Room / Office / Call Center | Unified Communications / Conference Room / Call Center / Office |
| Channel Configuration | Stereo | Mono | Mono | Mono | Stereo |
| Connectivity | USB / Bluetooth | Bluetooth | Quick Disconnect (QD) | USB | Quick Disconnect (QD) |
| Input Types | USB / Bluetooth | N/A | N/A | USB | Quick Disconnect (QD) |
| Output Types | USB / Bluetooth | N/A | Quick Disconnect (QD) | USB | Quick Disconnect (QD) |
| Power Output (if applicable) | N/A | N/A | N/A | N/A | N/A |
| Power Source | USB-Powered / Battery | Battery | N/A | USB-Powered | N/A |
| Frequency Response | 80 Hz – 16 kHz | 150 Hz – 6.8 kHz | 100 Hz – 10 kHz | 20 Hz – 20 kHz (Speaker); 100 Hz – 8 kHz (Microphone) | 150 Hz – 6.8 kHz |
| Signal Processing | DSP / Noise Suppression | DSP / AEC | Noise Suppression | DSP / Noise Suppression | DSP / AEC / Noise Suppression |
| Audio Codecs Supported | N/A | SBC | N/A | N/A | N/A |
| Mounting Option | N/A | N/A | N/A | Desktop | N/A |
| Control Interface | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons |
| Wireless Support | Bluetooth | Bluetooth | No | No | No |
| Product Name | 2499-823-209-Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China | 6640-906-300-MOTION UC+ MS - Headset - Ear-hook - Calls & Music - Black - Grey - Monaural - Wireless | Jabra BIZ 2400 II Mono 3-1 UNC QD (2406-720-209) | Jabra Evolve2 40 UC Mono Headset (24089-889-999) | Jabra BIZ 2300 DUO NC WB QD (2389-820-109) |
| Height | 6.3 | 2.6 | 6.89 | 7.87 | 6.8 |
| Width | 5.7 | 2.2 | 6.89 | 6.96 | 7.0 |
| Depth | 2.1 | 0.6 | 2.17 | 2.36 | 2.0 |
| Weight | 0.19 | 0.02 | 0.11 | 0.37 | 2.6 |
Reliable USB stereo headset delivering consistent clarity during long support calls.
Comfortable dual-ear design with dependable microphone accuracy.
Stable connectivity and strong audio balance for office teams.
Durable construction suited for high-volume environments.
Clear conversations without distortion across platforms.
Simple deployment and predictable enterprise performance.
Excellent communication tool for structured business operations.
The Biz 2400 II USB Duo BT MS headset works seamlessly with Windows and macOS computers via USB-A, and pairs with smartphones, tablets and other Bluetooth-enabled devices.
Press and hold the multi-function button for 2 seconds to toggle between USB-A connection and Bluetooth mode, indicated by green or blue LED colors respectively.
The Biz 2400 II USB Duo BT MS delivers up to 12 hours of talk time and 300 hours of standby on a single full battery charge.
A full recharge takes approximately 2 hours when using the included USB-A charging cable.