Jabra Biz 2400 II Duo,Noise cancelling over the head headset with quick disconnect (QD) and coiled GN1200 cord with RJ45 connector. Removed from a corporate environment and look to be unused but cannot confirm that. Not certain if its the 2400 model or 2400 II, though the product number all point to 2400 II. These retail at £125
eBay