Jabra BIZ 2400 II Duo UNC headset has an Ultra Noise Canceling Microphone. The best noise canceling technology money can buy. Jabra Biz 2400 II Duo has an acoustic shock protection, extra paddings and the only headset with a 360deg boom microphone. Jabra Biz 2400 II duo has a microphone has little small holes instead of one larger one as well as foam included inside of the microphone. This design reduces the penetration of air shocks to optimize the call sound quality as well as reduce background noise. 

Key Features:

• Duo Ear (covering both sides)
• Jabra's own Ultra Noise Canceling Microphone - the best in class.
• Large leatherette ear cushions and extra headband padding.
• HD (wide band) sound
• 360˚ degree rotating boom arm
• Built-in Kevlar-reinforced cables.
• 3 year Jabra warranty

• Requires a Jabra Link 860 amplifier (or GN1200 smart cord) 

For more information, see Jabra Biz 2400 II datasheet