United States$5,000,000+
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Reliable USB stereo headset delivering consistent clarity during long support calls.
2499-823-209
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Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Cal...
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2499-823-209
- Description:
- Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China
- Rating:
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- Brand:
- Jabra
- Condition:
3 Year Extended Warranty
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2499-823-209 Overview
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.
2499-823-209 price is is available on request. Get immediate quote.
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2499-823-209 Specifications
- Product Type
- Audio Equipment
- Audio Device Type
- Headset
- Microphone Type
- Condenser
- Speaker Type
- N/A
- Form Factor
- Head-band
- Use Case
- Office / Call Center / Unified Communications / Meeting Spaces
- Channel Configuration
- Stereo
- Connectivity
- USB / Bluetooth
- Input Types
- USB / Bluetooth
- Output Types
- USB / Bluetooth
- Power Output (if applicable)
- N/A
- Power Source
- USB-Powered / Battery
- Frequency Response
- 80 Hz – 16 kHz
- Signal Processing
- DSP / Noise Suppression
- Audio Codecs Supported
- N/A
- Mounting Option
- N/A
- Control Interface
- Physical Buttons
- Wireless Support
- Bluetooth
- Product Name
- 2499-823-209-Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China
- Height
- 6.3
- Width
- 5.7
- Depth
- 2.1
- Weight
- 0.19
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 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 |
Reviews & Ratings
B
Bodie Kramer
5
Comfortable dual-ear design with dependable microphone accuracy.
R
Rylan Everett
5
Stable connectivity and strong audio balance for office teams.
C
Cedric Hanley
5
Durable construction suited for high-volume environments.
M
Matteo Griffin
5
Clear conversations without distortion across platforms.
K
Kieran Salinas
5
Simple deployment and predictable enterprise performance.
Z
Zaid Carpenter
4
Excellent communication tool for structured business operations.
Questions & Answers
What devices is the Biz 2400 II USB Duo BT MS headset compatible with?
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.
How do I switch between USB and Bluetooth modes on the Biz 2400 II USB Duo BT MS?
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.
What is the battery life of the Biz 2400 II USB Duo BT MS in Bluetooth mode?
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.
How long does it take to fully charge the Biz 2400 II USB Duo BT MS headset?
A full recharge takes approximately 2 hours when using the included USB-A charging cable.
Does the Biz 2400 II USB Duo BT MS offer active noise cancellation?
Yes. Its adaptive active noise cancellation microphone reduces background noise by up to 95% for clear, uninterrupted calls.
Is the Biz 2400 II USB Duo BT MS certified for Microsoft Teams?
Yes. This headset is Microsoft Teams certified, featuring a dedicated Teams button and optimized call controls.
What type of ear cushions does the Biz 2400 II USB Duo BT MS use?
It features soft leatherette ear cushions with memory foam padding for all-day comfort and thermal regulation.
What is the microphone boom specification on the Biz 2400 II USB Duo BT MS?
The flexible noise-canceling boom microphone has a 270° rotation range and 360° omnidirectional pickup for consistent voice clarity.
How much does the Biz 2400 II USB Duo BT MS headset weigh?
The binaural headset weighs approximately 135 grams, providing a lightweight feel for extended office or call-center use.
Can I connect the Biz 2400 II USB Duo BT MS to two Bluetooth devices simultaneously?
Yes. Thanks to multipoint Bluetooth, you can pair and switch between two mobile devices without re-pairing.
What in-line controls are available on the Biz 2400 II USB Duo BT MS?
Integrated call controls include answer/end, mute, volume up/down, and mode switch buttons for USB and Bluetooth.
Is the Biz 2400 II USB Duo BT MS suitable for call center environments?
Absolutely. Its binaural design, noise cancellation and MS Teams certification make it ideal for high-demand call-center workflows.
What warranty does the Biz 2400 II USB Duo BT MS headset include?
The headset comes with a two-year limited warranty covering defects in materials and workmanship under normal use.
What audio frequency response does the Biz 2400 II USB Duo BT MS deliver?
It delivers a wideband audio frequency response of 100 Hz–6.8 kHz for crystal-clear voice and professional call quality.
How do I maintain and clean the Biz 2400 II USB Duo BT MS headset?
Wipe ear cushions and headband with a dry or slightly damp cloth; avoid solvents. Replace cushions every six months for hygiene.
What makes the Biz 2400 II USB Duo BT MS headset durable?
Constructed with reinforced stainless-steel headband, impact-resistant plastics and international compliance (CE, RoHS), it withstands daily professional use.