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2499-823-209
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- Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China
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Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
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Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
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Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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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.
What is the price of 2499-823-209?
Pricing for 2499-823-209 is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for 2499-823-209.
Explore more options from Audio Equipment or explore other Jabra products.
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
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| Audio Codecs Supported | N/A | N/A | N/A | N/A | SBC |
| Audio Device Type | Headset | Headset | Headset | Headset | Headset |
| Channel Configuration | Stereo | Mono | Mono | Stereo | Mono |
| Connectivity | USB / Bluetooth | Quick Disconnect (QD) | USB | Quick Disconnect (QD) | Bluetooth |
| Control Interface | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons | Physical Buttons |
| Depth | 2.1 | 2.17 | 2.36 | 2.0 | 0.6 |
| Form Factor | Head-band | Desktop | Desktop | On-Ear / Headband | Portable |
| Frequency Response | 80 Hz – 16 kHz | 100 Hz – 10 kHz | 20 Hz – 20 kHz (Speaker); 100 Hz – 8 kHz (Microphone) | 150 Hz – 6.8 kHz | 150 Hz – 6.8 kHz |
| Height | 6.3 | 6.89 | 7.87 | 6.8 | 2.6 |
| Input Types | USB / Bluetooth | N/A | USB | Quick Disconnect (QD) | N/A |
| Microphone Type | Condenser | Condenser | Boom / N/A | Condenser | Condenser |
| Mounting Option | N/A | N/A | Desktop | N/A | N/A |
| Output Types | USB / Bluetooth | Quick Disconnect (QD) | USB | Quick Disconnect (QD) | N/A |
| Power Output (if applicable) | N/A | N/A | N/A | N/A | N/A |
| Power Source | USB-Powered / Battery | N/A | USB-Powered | N/A | Battery |
| Product Name | 2499-823-209-Biz 2400 II USB Duo BT MS - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China | 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) | 6640-906-300-MOTION UC+ MS - Headset - Ear-hook - Calls & Music - Black - Grey - Monaural - Wireless |
| Product Type | Audio Equipment | Audio Equipment | Audio Equipment | Audio Equipment | Audio Equipment |
| Signal Processing | DSP / Noise Suppression | Noise Suppression | DSP / Noise Suppression | DSP / AEC / Noise Suppression | DSP / AEC |
| Speaker Type | N/A | N/A | Active | N/A | N/A |
| Use Case | Office / Call Center / Unified Communications / Meeting Spaces | Unified Communications / Conference Room / Call Center | Unified Communications / Conference Room / Office / Call Center | Unified Communications / Conference Room / Call Center / Office | Unified Communications |
| Weight | 0.19 | 0.11 | 0.37 | 2.6 | 0.02 |
| Width | 5.7 | 6.89 | 6.96 | 7.0 | 2.2 |
| Wireless Support | Bluetooth | No | No | No | Bluetooth |
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Questions & Answers
Q
What devices is the Biz 2400 II USB Duo BT MS headset compatible with?
A
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.
Q
How do I switch between USB and Bluetooth modes on the Biz 2400 II USB Duo BT MS?
A
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.
Q
What is the battery life of the Biz 2400 II USB Duo BT MS in Bluetooth mode?
A
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.
Q
How long does it take to fully charge the Biz 2400 II USB Duo BT MS headset?
A
A full recharge takes approximately 2 hours when using the included USB-A charging cable.
Q
Does the Biz 2400 II USB Duo BT MS offer active noise cancellation?
A
Yes. Its adaptive active noise cancellation microphone reduces background noise by up to 95% for clear, uninterrupted calls.
Q
Is the Biz 2400 II USB Duo BT MS certified for Microsoft Teams?
A
Yes. This headset is Microsoft Teams certified, featuring a dedicated Teams button and optimized call controls.
Q
What type of ear cushions does the Biz 2400 II USB Duo BT MS use?
A
It features soft leatherette ear cushions with memory foam padding for all-day comfort and thermal regulation.
Q
What is the microphone boom specification on the Biz 2400 II USB Duo BT MS?
A
The flexible noise-canceling boom microphone has a 270° rotation range and 360° omnidirectional pickup for consistent voice clarity.
Q
How much does the Biz 2400 II USB Duo BT MS headset weigh?
A
The binaural headset weighs approximately 135 grams, providing a lightweight feel for extended office or call-center use.
Q
Can I connect the Biz 2400 II USB Duo BT MS to two Bluetooth devices simultaneously?
A
Yes. Thanks to multipoint Bluetooth, you can pair and switch between two mobile devices without re-pairing.
Q
What in-line controls are available on the Biz 2400 II USB Duo BT MS?
A
Integrated call controls include answer/end, mute, volume up/down, and mode switch buttons for USB and Bluetooth.
Q
Is the Biz 2400 II USB Duo BT MS suitable for call center environments?
A
Absolutely. Its binaural design, noise cancellation and MS Teams certification make it ideal for high-demand call-center workflows.
Q
What warranty does the Biz 2400 II USB Duo BT MS headset include?
A
The headset comes with a two-year limited warranty covering defects in materials and workmanship under normal use.
Q
What audio frequency response does the Biz 2400 II USB Duo BT MS deliver?
A
It delivers a wideband audio frequency response of 100 Hz–6.8 kHz for crystal-clear voice and professional call quality.
Q
How do I maintain and clean the Biz 2400 II USB Duo BT MS headset?
A
Wipe ear cushions and headband with a dry or slightly damp cloth; avoid solvents. Replace cushions every six months for hygiene.
Q
What makes the Biz 2400 II USB Duo BT MS headset durable?
A
Constructed with reinforced stainless-steel headband, impact-resistant plastics and international compliance (CE, RoHS), it withstands daily professional use.
