Jabra BIZ 2400 II QD Mono 3-in-1 IP headset, optimized for Unify. The headset features a convertible form factor, allowing you to choose between a headband, neckband or earhook wearable style. Both the headband and the earpiece are padded for comfort, while the headset is extremely lightweight. Everything about the headset delivers the best fit possible. The QD cord is reinforced with Kevlar and the microphone can be rotated a full 360 degrees without breaking, so the headset can take on demanding environments without losing performance.