Jabra Biz 2400 II Duo Headset | QD | NC | Wideband | Balanced – 2489-825-209

Product Overview

The Jabra Biz 2400 II Duo QD NC Wideband Balanced (2489-825-209) is a professional-grade corded headset engineered specifically for Unify OpenStage telephone systems. This dual-ear (stereo) headset delivers wideband HD audio with balanced audio output, ensuring crystal-clear voice communication in demanding contact center and office environments. The noise-canceling microphone with Air Shock technology eliminates background noise and breathing sounds, so customers hear only your voice.

Built for durability in high-volume call environments, the Biz 2400 II features Jabra's exclusive FreeSpin 360-degree rotating boom arm that won't break under daily use, Kevlar-reinforced cords for maximum longevity, and gold-plated contacts for reliable signal transmission. At just 77 grams, this headset is 40% lighter than competing models, reducing agent fatigue during extended call sessions.

The Quick Disconnect (QD) connector provides instant connectivity to desk phones when paired with the appropriate bottom cable (8800-01-89 for OpenStage, sold separately). PeakStop hearing protection filters sounds above 118dB before they reach your ears, ensuring safe listening levels throughout the workday. Leatherette ear cushions and padded headband deliver all-day comfort for professionals who spend hours on calls.

Who Should Use This Product?

Contact Center Agents

Ideal for high-volume call environments requiring all-day comfort, superior noise cancellation, and durable construction that withstands intensive daily use.

Unify OpenStage Users

Specifically optimized with balanced wideband audio for organizations using Unify (Siemens) OpenStage telephone systems.

Customer Service Professionals

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

Why Choose This Product

The Jabra Biz 2400 II Duo delivers exceptional value for contact centers and professional environments with its combination of superior audio quality, all-day comfort, and enterprise-grade durability. The wideband balanced audio ensures HD voice clarity on every call, while the noise-canceling microphone with Air Shock technology guarantees customers hear only your agent's voice—not background office noise. At 77 grams, agents experience significantly less fatigue during long shifts compared to heavier competing headsets.

For IT managers and procurement teams, the Biz 2400 II represents a smart investment with its Kevlar-reinforced cords, unbreakable FreeSpin boom arm, and gold-plated contacts that extend product lifespan and reduce replacement costs. PeakStop hearing protection helps organizations meet workplace safety requirements while protecting employee hearing. The Quick Disconnect system enables easy sharing between shifts and seamless integration with existing Unify OpenStage infrastructure.

Will This Work for Me?

Works With

  • Unify (Siemens) OpenStage telephone systems
  • Desk phones with QD-compatible bottom cables
  • PC/Mac via Jabra Link adapters (180, 230, 260, 265, 280)

Requirements

  • QD bottom cable 8800-01-89 for OpenStage (sold separately)
  • Compatible desk phone with headset port or Jabra Link adapter for PC

Software

  • Jabra Direct (optional, for firmware updates when used with USB adapter)

Note

This is the Balanced Wideband variant optimized for Unify OpenStage phones. For standard wideband, see 2489-820-209. Requires separate QD bottom cable for complete solution.

What's in the Box

  • Headset with headband
  • Leatherette ear cushions
  • Carry pouch
  • Quick start guide

Technical Specifications

Primary Attributes

Active Noise Cancellation (ANC): No
Connectivity: Quick Disconnect (QD)
Corded / Wireless: Corded
Headset Speakers: Stereo (Two Ear)
Warranty: 24 months
Wearing Style: Over the Head
Wideband Audio: Yes

Biz 2400 II Models (8)

View Jabra Biz 2400 II Mono 3-in-1 Headset | QD | UNC – 2406-720-209
Jabra BIZ 2400 II Mono Ultra Noise Canceling 3-in-1 Headset – 2406-720-209
Jabra logo

BIZ 2400 II Mono 3-in-1 UNC

SKU: 2406-720-209
Condition: New
Stock: 30
Quick Disconnect (QD) Quick Disconnect (QD)
$184.37
$316.00
Save $131.63
(42% off)
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 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)