The Jabra BIZ 2400 II QD Duo NC Headset improves on the already market leading Jabra BIZ 2400 QD Series. Audio improvements now deliver best-in-class HD audio performance no matter how loud your working environment gets. The Noise Cancelling microphone filters ambient sounds better than ever allowing only the user to heard. Enhanced comfort and reliability for better productivity and lower cost of ownership. Soft leatherette ear cushions, padded headband and adjustable boom makes it easy to find the perfect fit while reinforced Kevlar cords and a robust built makes the Jabra BiZ 2400 II Series perfect for intensive every-day use. Features: Corded Telephone Headset Crystal Clear Calls 2409-820-204 Specifications: Dimensions: H:6.0 x W:16.0 x D:20.0 cm Colour: Grey Guarantee:2 years Material: Plastic Model Number: 100005677