Jabra BIZ 2400 II Duo CC. Certified Refurbished. Includes One Year Extended Service. . The Jabra / GN Netcom BIZ2400 II Duo CC headsets uses Noise Cancellation for better conversation which eliminates background noise. The crystal clear conversation can be expected as there is HD voice with HIFI sound.. . The Freespin™ Technology provides unbreakable 360° spin boom arm provides outstanding durability and optimum positioning. Multi-Device Connectivity is an added advantage to the headset which allows to connect multiple devices.. . BIZ2400 II Duo CC:. . . . |Connect to Multiple Devices |FreeSpin Boom w/ 360° Plus Rotation |Noise-Canceling Microphone |Over the Ear Headset |HD Voice Clarity. High-Quality Speaker Offers Crystal Clear Conversations |Connections: |- USB |Wired Connectivity |Duo Headset |PeakStop Technology |Connects To:.