We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black wired on-ear headset with dual ear cups, padded headband and boom microphone

Jabra Consumer Products

Jabra Biz 2400 II Duo USB Headset 2499-823-209

SKU CH-HD68-TXRT6 MPN 2499-823-209

Wired on-ear headset with active noise cancellation, 60 Hz to 1600 Hz response, and 360° swivel boom for contact-centre use

  • ColorBlack
  • Wireless TypeWired
  • Headphone Frequency Response60 Hz - 1600 Hz
  • Headphone Input Impedance3900 Ohm
  • Noise CancellingActive
  • Weight3.53 ounces
  • Crystal-clear calls with 60–1600 Hz voice-optimised frequency response
  • All-day comfort from lightweight 3.53 oz design with extra ear-cushion padding
  • Unbreakable 360° swivel boom arm survives constant repositioning
  • Kevlar-reinforced cord resists daily wear in high-volume environments
  • Active noise cancellation plus sound isolation blocks contact-centre background noise

Professional Wired Headset

The Jabra Biz 2400 II Duo is a corded contact-centre headset with dual ear cups, a headband design and active noise cancellation. It connects via USB and weighs 3.53 ounces for extended wear. A 360° swivelling boom and Kevlar-reinforced cord survive heavy daily use.

Who It Suits And Who It Does Not

Agents needing clear mono audio in loud offices will benefit from the narrow 60 Hz to 1600 Hz response and sound isolation. Buyers who want wireless freedom, stereo music fidelity or water resistance should look elsewhere.

Critical Compatibility Specification

The headset presents a 3900 Ohm impedance and terminates in a USB connector for direct computer and call-centre software integration. Verify that your system supports this impedance level before purchase.

Highlights

  • Crystal-clear calls with 60–1600 Hz voice-optimised frequency response
  • All-day comfort from lightweight 3.53 oz design with extra ear-cushion padding
  • Unbreakable 360° swivel boom arm survives constant repositioning
  • Kevlar-reinforced cord resists daily wear in high-volume environments
  • Active noise cancellation plus sound isolation blocks contact-centre background noise

Specifications

BrandJabra
Series711374
ModelBiz 2400 II Duo
Part Number2499-823-209
ColorBlack
Wireless TypeWired
Headphone Frequency Response60 Hz - 1600 Hz
Headphone Input Impedance3900 Ohm
Noise CancellingActive
Weight3.53 ounces

Questions about this item

Does my computer need a free USB-A port for the 2499-823-209 to work?

Yes, the headset connects via a wired USB-A cable so a free USB-A port on the computer is required.

Will the 3900 Ohm impedance cause volume issues if I plug the headset into an older sound card?

The 3900 Ohm impedance is matched to the built-in USB audio processor, so volume levels stay consistent regardless of the host sound hardware.

How can I confirm the active noise cancellation is reducing background sound after I put the headset on?

Speak while the microphone boom is positioned; the sidetone lets you hear your own voice clearly while ambient noise drops noticeably.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.