Jabra Biz 2400 II Mono 3-in-1 Headset | QD | UNC – 2406-720-209

Product Overview

The Jabra Biz 2400 II Mono 3-in-1 (2406-720-209) is a professional corded headset engineered for contact centers and demanding office environments. Featuring Ultra Noise Cancellation (UNC) microphone technology, this headset eliminates background noise to deliver crystal-clear voice transmission, ensuring your customers hear only your voice. The versatile 3-in-1 convertible design allows you to wear the headset as a headband, ear hook, or neckband—adapting to your personal comfort preference throughout the workday.

Built for durability in high-volume call environments, the Biz 2400 II features a Kevlar-reinforced cord and an unbreakable 360° FreeSpin boom arm that withstands the rigors of daily contact center use. The aerodynamic Air Shock microphone design reduces popping noises and breathing sounds for professional call quality. PeakStop technology provides acoustic shock protection by filtering out sounds above 118dB before they reach your ears.

At just 45 grams, the Biz 2400 II is up to 40% lighter than competing headsets, with leatherette ear cushions and padded headband delivering all-day comfort. The Quick Disconnect (QD) connector provides instant connectivity to a wide range of desk phone systems when paired with the appropriate bottom cable or adapter, making it an ideal choice for organizations standardizing on professional-grade audio equipment.

Who Should Use This Product?

Contact Center Agents

Ideal for high-volume call environments where background noise elimination and all-day comfort are essential for productivity and customer satisfaction.

Customer Service Representatives

Perfect for professionals who spend extended hours on calls and need reliable audio quality with hearing protection features.

Office Professionals with Desk Phones

Suited for any desk phone user requiring professional-grade audio, flexible wearing options, and durable construction for daily use.

Why Choose This Product

The Jabra Biz 2400 II Mono 3-in-1 UNC transforms contact center communications with Ultra Noise Cancellation technology that ensures customers hear only your voice—not the busy office around you. The 3-in-1 convertible design lets agents choose their preferred wearing style, reducing fatigue during long shifts. At 40% lighter than competing headsets, the Biz 2400 II delivers all-day comfort without sacrificing durability.

For IT managers and procurement teams, the Biz 2400 II offers lower total cost of ownership through its robust construction featuring Kevlar-reinforced cords and an unbreakable boom arm. PeakStop hearing protection helps organizations meet workplace safety requirements while the 3-year warranty provides peace of mind. The Quick Disconnect system enables flexible deployment across desk phone systems, simplifying standardization across the enterprise.

Will This Work for Me?

Works With

  • All leading desk phone systems via QD bottom cable
  • PC/Mac softphones via Jabra Link USB adapter

Requirements

  • QD bottom cable (e.g., GN1200) or adapter (Jabra Link 180, 230, 260, 265, or 280) sold separately
  • Desk phone with standard headset port (RJ-9/RJ-11)

Software

  • Jabra Direct / Jabra Xpress (optional, for device configuration and management)

Note

This is the Ultra Noise Cancelling (UNC) variant for extremely noisy environments. For standard noise cancellation, see NC variant (2406-820-205).

What's in the Box

  • Headset
  • Ear hook
  • Neckband
  • QD cable
  • Leatherette ear cushion
  • Pouch

Technical Specifications

Primary Attributes

Active Noise Cancellation (ANC): No
Connectivity: Quick Disconnect (QD)
Corded / Wireless: Corded
Headset Speakers: Mono (One Ear)
Warranty: 24 months
Wearing Style: Over the Head, Behind the Neck, behind-the-ear
Wideband Audio: Yes

Biz 2400 II Models (8)

View Jabra Biz 2400 II Mono Headset | QD | NC – 2403-820-205
Jabra BIZ 2400 II QD Mono Noise Canceling Headset – 2403-820-205
Jabra logo

BIZ 2400 II QD Mono NC

SKU: 2403-820-205
Condition: New
Stock: 250+
Quick Disconnect (QD) Quick Disconnect (QD)
$166.28
$285.00
Save $118.72
(42% off)
View Jabra Biz 2400 II Duo Headset | QD | NC – 2409-820-205
Jabra BIZ 2400 II QD Duo Noise Canceling Headset – 2409-820-205
Jabra logo

BIZ 2400 II QD Duo NC

SKU: 2409-820-205
Condition: New
Stock: 250+
Quick Disconnect (QD) Quick Disconnect (QD)
$184.37
$316.00
Save $131.63
(42% off)
View Jabra Biz 2400 II Duo Headset | QD | UNC – 2409-720-209
Jabra BIZ 2400 II QD Duo Ultra Noise Canceling Headset – 2409-720-209
Jabra logo

BIZ 2400 II QD Duo UNC

SKU: 2409-720-209
Condition: New
Stock: 17
Quick Disconnect (QD) Quick Disconnect (QD)
$194.28
$333.00
Save $138.72
(42% off)
View Jabra Biz 2400 II Duo Headset | QD | NC | Wideband – 2489-820-209
Jabra BIZ 2400 II Duo NC QD Wideband Headset – 2489-820-209
Jabra logo

BIZ 2400 II Duo NC WB

SKU: 2489-820-209
Condition: New
Stock: 56
Quick Disconnect (QD) Quick Disconnect (QD)
$184.37
$316.00
Save $131.63
(42% off)
View Jabra Biz 2400 II Duo Headset | QD | NC | Wideband | Balanced – 2489-825-209
Jabra BIZ 2400 II Duo NC QD Wideband Balanced Headset – 2489-825-209
Jabra logo

BIZ 2400 II Duo NC WB Balanced

SKU: 2489-825-209
Condition: New
Stock: 35
Quick Disconnect (QD) Quick Disconnect (QD)
$184.37
$316.00
Save $131.63
(42% off)
View Jabra Biz 2400 II Mono 3-in-1 Headset | QD | NC | Wideband | Balanced – 2486-825-209
Jabra BIZ 2400 II Mono 3-in-1 NC QD Wideband Balanced Headset – 2486-825-209
Jabra logo

BIZ 2400 II Mono 3-in-1 NC WB Balanced

SKU: 2486-825-209
Condition: New
Out of Stock
Quick Disconnect (QD) Quick Disconnect (QD)
$175.62
$301.00
Save $125.38
(42% off)
View Jabra Biz 2400 II Mono 3-in-1 Headset | QD | NC | Wideband – 2486-820-209
Jabra BIZ 2400 II Mono 3-in-1 NC QD Wideband Headset – 2486-820-209
Jabra logo

BIZ 2400 II Mono 3-in-1 NC WB

SKU: 2486-820-209
Condition: New
Stock: 10
Quick Disconnect (QD) Quick Disconnect (QD)
$175.62
$301.00
Save $125.38
(42% off)
View Jabra Biz 2400 II Mono 3-in-1 Headset | QD | NC – 2406-820-205
Jabra BIZ 2400 II QD Mono 3-in-1 Noise Canceling Headset – 2406-820-205
Jabra logo

BIZ 2400 II Mono 3-in-1 NC

SKU: 2406-820-205
Condition: New
Stock: 153
Quick Disconnect (QD) Quick Disconnect (QD)
$175.62
$301.00
Save $125.38
(42% off)