Corded headset Great for long calls at your desk USB & QD connectivity Connect to 1 device Built to last 2 year limited warranty Passive Noise-Cancellation Lightweight On-ear wearing style Plug-&-play Your contact centre agents are your brand ambassadors, so give them the tool to sound as clear as your brand. In Jabras Biz2300, world-class sound meets world-class durability in an exceptionally comfortable and stylish corded headsetkeeping both your agents and your customers happy.Jabra Biz2300 QD Siemens Duo is a balanced duo headset designed for Siemens OpenStage telephones. Provides instant connectivity to a wide range of deskphone systems with its QD (Quick Disconnect) plug.Jabra Biz2300 QD Siemens Duo is a balanced duo headset designed for Siemens OpenStage telephones. Provides instant connectivity to a wide range of deskphone systems with its QD (Quick Disconnect) plug. Performance Certification CE, FCC, UL, cUL,EAC, RCM, KCC, RoHS, REACH Country of origin China HD voice