The biz 2400 ii offers outstanding sound at both ends of the call for a superior customer experience up to 40 lighter than competing headsets and with a low headband pressure the biz 2400 ii allows the agent to focus on their customer conversation in unrivalled comfort jabra biz 2400 ii qd duo is a duo headset with a qd quick disconnect plug that provides instant connectivity to a wide range of desk phone systems manufacturers description the jabra biz 2400 usb headset is from jabra gn