Jabra Biz 2400 II QD Mono 3-in-1 Headset

(Quick Disconnect)


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Jabra Biz 2400 II QD Mono 3-in-1 Headset (Jabra 2486-820-209)

  • Premium performance headset weighing only 45 grams
  • Includes 3 wearing options to find your perfect all-day fit
  • Noise cancelling mic even filters out sharp breathing sounds
  • Remember… an amplifier or direct cable is required
  • Same Day Shipping On In Stock Items
  • Warranty 3-Years
  • Non-Returnable
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Jabra 2400 II Headset
How to change wearing options with the Jabra BIZ™ 2400 headset.

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Jabra Biz 2400 II QD Mono 3-in-1 Headset

The Jabra Biz 2400 II QD Mono 3-in-1 headset delivers outstanding sound on both ends of the call. Weighing 40% lighter than competing headsets with soft leatherette ear cushion, it offers superior audio quality, reliability, and comfort. This headset is built to last with a reinforced cord and 360-degree rotating boom arm.

Headset With Different Wearing Options

Better Conversations For A Better Experience

The most important function of a contact center headset is eliminating background noise from the busy environment and letting the customer hear your voice clearly. The Biz 2400 II QD Mono 3-in-1 headset has a superior noise-cancelling microphone that helps eliminate background noise to give a better customer experience.

close up of rotating mic


Better Sound for Crystal Clear Calls

If you’re in a busy environment, you need great sound to hear the voice of your customer. Additionally, when you’re concentrating on work, you want that HIFI sound for music. The Jabra Biz 2400 II is great at both.

  • HD voice technology makes sure you clearly understand the other party
  • The speakers reduce ambient noise, so you can focus on the call
  • Specially designed “air shock” noise-cancelling mic filters out sharp breathing sounds and popping noises often heard in conversations.

Better Design to Last For Years

Jabra Biz 2400 II QD Mono is built to last in a high-performing contact center, meaning fewer headset replacements and less downtime for you and your team and lower total cost of ownership.

  • Reinforced cord is built to withstand the contact center environment and is protected against office chair wheels, sharp objects and daily use
  • Boom arm can be rotated 360 degrees with zero risk of breaking. We call this FreeSpin™.

Better Comfort for All-Day Wear

The Jabra Biz 2400 II has an extremely lightweight and unobtrusive design. This means lowered agent fatigue and more productive calls.

  • 40% lighter than competing high-end headsets
  • Adjustable headband and microphone boom arm let you find the perfect fit
  • Control unit lets you change volume, mute your calls, and more
  • PeakStop™ technology removes sudden loud sounds or tones before they reach your ears: Any sound above 118db is filtered out.
  • Super-soft leatherette head-and-ear cushioning

Woman wearing corded headset


Jabra Biz 2400 II QD (Quick Disconnect) Series

Corded Headsets:

The Biz Series offers a range of professional corded headsets with great sound, designed for call center agents, customer service advisors and others who listen and talk to customers for a living.

Crystal clear conversations:

Noisy workplaces can make calls a struggle for agents and customers. Biz Series headsets take noise out of the equation, helping you focus on the conversation. HD Voice technology and noise-cancelling microphones ensure crystal clear sound quality at both ends of the call for a more professional customer experience.

All day comfort:

Biz Series headsets are made for all day wear, with ergonomically designed frames, lightweight design and super soft foam or leatherette ear cushions. Headbands and microphone booms can be adjusted for comfort.

Tough design:

High-performing contact centers and other call-intensive environments need headsets that can survive countless hours of use. The Jabra Biz 2400 II QD Mono 3-in-1 headset is highly durable, with an adjustable boom-arm that can be rotated without the risk of breaking.

Easy to deploy and manage:

USB Biz Series headsets are optimized for use with all leading desk phone systems and Unified Communications platforms. Jabra Xpress enables you to easily configure all of your company’s audio devices from one central point.

Extensive range:

Biz Series headsets are available in QD versions for your desk phone or USB versions for your computer, and in Mono and Duo versions.

Jabra Biz 2400 II QD Technical Specifications:


  • Weight
    • w/ cord: 61g | 2.15 oz
    • w/o cord: 45g | 1.57 oz
  • Headset dimensions: 141 x 183 x 67mm
  • Warranty: 3 yr
  • Model: Jabra HSC021
  • SKU: 2486-820-209
  • UPC: 706487015611

Jabra Biz 2400 II QD Headset Replaced/Updated:

  • Jabra Biz 2400 II USB Mono 3-in-1 Headset
    • UC Version – SKU: 2496-829-309 / UPC: 706487015697
    • MS Teams Version – SKU: 2496-823-309 / UPC: 706487015710


  • User sound protection: PeakStop™ 118dBA SPL (RMS)
  • Speaker size:
    • NB: Ø 30x 6.8mm
    • WB: Ø 30x 6.4mm
  • Speaker Max input power: 20mW
  • Speaker sensitivity:
    • NB: 10 dB Pa/V ±3dB
    • WB: 8 dB Pa/V ±3dB
  • Speaker impedance:
    • NB: 300Ω ±15%/1kHz/ 1.0V
    • WB: 300Ω ±15%/1kHz/ 1.0V
  • Speaker frequency range:
    • NB: 100Hz to 4,500Hz
    • WB: 150Hz to 6,800Hz
  • Speaker bandwidth
    • Music mode: NB: 100Hz to 4,500Hz | WB: 150Hz to 6,800Hz
    • Speak mode: NB: 100Hz to 4,500Hz | WB: 150Hz to 6,800Hz
  • Microphone type: Noise canceling, Uni-directional
  • Microphone sensitivity:
    • STD NC: -30 dB V/Pa±3dB, Pin=1Pa, 0dB=1V/Pa
    • STD UNC: -28 dB V/Pa±3dB, Pin=1Pa, 0dB=1V/Pa
  • Microphone frequency range: 101Hz – 8kHz
  • Microphone bandwidth: 100Hz – 8kHz
  • Microphone power consumption: Current consumption 70-150µA@RL=3.9kΩ, Vs=3.0V
  • Power consumption: N/A
  • Certifications: CE, FCC, UL

Fit & Comfort

  • Headset form factor: Headband, earhook, neckband
  • Boom arm adjustable: 360°
  • Boom arm flexible: Yes
  • Headband padding: Yes
  • Ear cushions: Leatherette


  • Device: Desk phone
  • Connection (mini jack, USB, etc): Quick Disconnect (QD)
  • Cord length: 100cm
  • Headset bandwidth: Hybrid wideband speaker for QD (up to 4,500Hz)

Box Contents

  • QD headset
  • Ear hook
  • Neckband
  • Warranty card
  • Warning card
  • Quick start guide
  • Carrying pouch

Additional information for the Jabra Biz 2400 II QD Mono 3-in-1 Headset

Wearing Style

Headband – Single Ear, Earbuds / In Ear / Ear Loop, Neckband

Headset Weight

45 grams

Part #





Same Day Shipping On In Stock Items









Headset Type


Connects To

Quick Disconnect (QD)


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