Jabra BIZ 2400 II USB UC Duo is a stereo headset that provides USB connectivity to all leading UC applications and softphones. 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 ultra-noise-cancelling microphone provides the highest degree of background noise elimination in any of our headsets. Jabra Biz 2400 II 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.