Does this headset support stereo audio?

Yes. Its binaural (dual-ear) design delivers true stereo audio for listening to music, training materials and multi-party conferences.

What frequency range does the headset support?

It covers a wideband frequency range of 150–6 800 Hz for voice and 20–20 000 Hz for media playback, delivering professional call clarity and dynamic multimedia sound.

How durable is the Biz 2400 II USB Duo CC?

Manufactured with a robust metal headband core, high-grade plastics and reinforced cables, it withstands heavy daily use in professional environments.

Is the headset compatible with major UC platforms?

Yes. It is certified for Microsoft Teams, Skype for Business and works seamlessly with Zoom, Cisco and other leading soft-phones.

What is the length of the cable on this headset?

It includes a 2 m USB-A cable plus a 1.5 m in-line control cable, providing 3.5 m total length for flexible workstation placement.

Does the Biz 2400 II USB Duo CC include a warranty?

Yes. It comes with a two-year manufacturer’s warranty covering defects in materials and workmanship under normal use.

How do I maintain and clean the ear cushions?

Gently wipe the ear cushions with a damp cloth and mild detergent. Replace them with genuine manufacturer parts every 6–12 months for hygiene.

Is the microphone boom arm flexible and adjustable?

Yes. The stainless-steel boom arm rotates 330° and offers precise positioning for optimal voice pickup and left/right ear adaptation.

What makes this headset suitable for call-center environments?

Its superior noise cancellation, ergonomic design, in-line controls, and UC certifications optimize agent productivity and call quality.

How is the Biz 2400 II USB Duo CC packaged?

Each headset ships in a retail-ready box with a quick-start guide, warranty card and protective ear-cushion covers for transit safety.

Can I use this headset for multimedia and VoIP calls?

Absolutely. Its wideband audio and stereo design support both professional VoIP calls and rich multimedia playback.

Where is the Biz 2400 II USB Duo CC manufactured?

The headset is engineered to Sennheiser’s quality standards and assembled in China under strict quality-control protocols.

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2499-829-309

Name: Biz 2400 II USB Duo CC - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China
Brand: Jabra
SKU: 2499-829-309
Rating: 4.3 (6 reviews)

Description:: Biz 2400 II USB Duo CC - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China
Rating:: 4.3(6)
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Brand:: Jabra
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2499-829-309 Overview

2499-829-309-Biz 2400 II USB Duo CC - Headset - Head-band - Office/Call center - Black - Silver - Binaural - China is a professional binaural headset designed specifically for use in demanding office and call center environments. This audio device combines both speaker and microphone functionalities in a head-band form factor, ensuring exceptional audio clarity for unified communications and collaboration applications. Its dual speakers deliver stereo sound while the noise-cancelling condenser microphone ensures precise voice pickup, making it an ideal solution for high-volume call centers and UC deployments.

This headset features a USB connection for easy integration with PC-based communication systems, supporting plug-and-play operation without the need for extra drivers. The Jabra Biz 2400 II USB Duo CC offers a frequency response of 80 Hz – 18 kHz for speakers and 100 Hz – 10 kHz for the microphone, supporting premium wideband audio and advanced noise cancellation for optimal performance. It is compatible with leading UC platforms and is suitable for use in boardrooms, meeting spaces, and remote work scenarios, where reliable connectivity and superior comfort are essential.

2499-829-309 price is is available on request. Get immediate quote.

Request bulk order quote for 2499-829-309 for additional pricing. Browse the full Headsets series or explore all Jabra products.

2499-829-309 Specifications

Product Type: Audio Equipment
Audio Device Type: Headset
Microphone Type: Condenser
Speaker Type: N/A
Form Factor: Portable
Use Case: Unified Communications / Conference Room / Call Center / Office
Channel Configuration: Stereo
Connectivity: USB
Input Types: USB
Output Types: USB
Power Output (if applicable): N/A
Power Source: USB-Powered
Frequency Response: 80 Hz – 18 kHz (Speaker), 100 Hz – 10 kHz (Microphone)
Signal Processing: DSP / Noise Suppression / AEC
Audio Codecs Supported: N/A
Mounting Option: Desktop
Control Interface: Physical Buttons
Wireless Support: No
Product Name: Jabra Biz 2400 II USB Duo CC
Height: 6.89
Width: 5.59
Depth: 1.18
Weight: 0.13

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	2499-829-309	4999-823-189	14208-18	26599-989-998	26599-989-899
Product Type	Audio Equipment	Audio Equipment	Audio Equipment	Audio Equipment	Audio Equipment
Audio Device Type	Headset	Headset	Conference Audio Hub	Headset	Headset
Microphone Type	Condenser	Condenser	N/A	Condenser	Condenser
Speaker Type	N/A	N/A	N/A	Active	Active
Form Factor	Portable	Desktop	Desktop	Portable	Portable
Use Case	Unified Communications / Conference Room / Call Center / Office	Unified Communications / Conference Room / Office	Unified Communications / Conference Room / Meeting Spaces / UC Deployments	Unified Communications	Unified Communications
Channel Configuration	Stereo	Stereo	Stereo	Stereo	Stereo
Connectivity	USB	USB-C	USB / 3.5mm	USB, Bluetooth	USB / Bluetooth
Input Types	USB	USB-C	3.5mm / USB	USB, Bluetooth	USB / Bluetooth
Output Types	USB	USB-C	3.5mm / USB	USB, Bluetooth	USB / Bluetooth
Power Output (if applicable)	N/A	N/A	N/A	N/A	N/A
Power Source	USB-Powered	USB-Powered	USB-Powered	Battery, USB-Powered	Battery / USB-Powered
Frequency Response	80 Hz – 18 kHz (Speaker), 100 Hz – 10 kHz (Microphone)	150 Hz – 7 kHz	150 Hz – 7 kHz	20 Hz – 20 kHz	20 Hz – 20 kHz
Signal Processing	DSP / Noise Suppression / AEC	DSP / Noise Suppression	DSP	DSP, Noise Suppression	DSP / AEC
Audio Codecs Supported	N/A	N/A	N/A	SBC, AAC	SBC / AAC
Mounting Option	Desktop	Desktop	Desktop	Desktop	Desktop
Control Interface	Physical Buttons	Physical Buttons	Physical Buttons	Physical Buttons	Physical Buttons
Wireless Support	No	No	No	Bluetooth	Bluetooth
Product Name	Jabra Biz 2400 II USB Duo CC	Jabra Evolve 20 Stereo MS USB-C	Jabra Evolve 40 USB Link Controller (14208-18)	Jabra Evolve2 65 LINK380A UC Stereo Beige (26599-989-998)	Jabra Evolve2 65 Link380c UC Stereo Black
Height	6.89	7.87	N/A	7.87	6.34
Width	5.59	6.89	N/A	6.38	7.44
Depth	1.18	2.36	N/A	2.32	2.68
Weight	0.13	0.28	N/A	0.40	0.41

Reviews & Ratings

Waylon Price

Excellent USB stereo headset for contact centers.

Xavi Mercer

Clear dual-ear audio and sturdy design.

Yuri Collins

Reliable USB connectivity and noise control.

Zander Ross

Comfortable for long support shifts.

Ari Fletcher

Professional call quality without distortion.

Benson Ward

Great enterprise headset investment.

Questions & Answers

What connectivity options does the Biz 2400 II USB Duo CC headset offer?

The Biz 2400 II USB Duo CC features a USB-A connection for direct plug-and-play integration with Windows and Mac computers, requiring no additional drivers.

How effective is the noise-cancelling microphone on this headset?

Its precision noise-cancelling microphone filters out background noise down to –26 dB, ensuring crystal-clear speech in busy office and call-center environments.

Is the Biz 2400 II USB Duo CC comfortable for all-day wear?

Yes. It has soft, replaceable leather-feel ear cushions, an adjustable stainless-steel headband and a balanced binaural design for extended comfort.

Can I control calls directly on the headset?

Yes. The in-line call control unit lets you answer, end and mute calls, as well as adjust volume without touching your computer.

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2499-829-309 Overview

2499-829-309 price is is available on request. Get immediate quote.

Request bulk order quote for 2499-829-309 for additional pricing. Browse the full Headsets series or explore all Jabra products.

2499-829-309 Specifications

Product Type

Audio Equipment

Audio Device Type

Headset

Microphone Type

Condenser

Speaker Type

N/A

Form Factor

Portable

Use Case

Unified Communications / Conference Room / Call Center / Office

Channel Configuration

Stereo

Connectivity

USB

Input Types

USB

Output Types

USB

Power Output (if applicable)

N/A

Power Source

USB-Powered

Frequency Response

80 Hz – 18 kHz (Speaker), 100 Hz – 10 kHz (Microphone)

Signal Processing

DSP / Noise Suppression / AEC

Audio Codecs Supported

N/A

Mounting Option

Desktop

Control Interface

Physical Buttons

Wireless Support

Product Name

Jabra Biz 2400 II USB Duo CC

Height

6.89

Width

5.59

Depth

1.18

Weight

0.13