Pay attention to the version numbers !!! Extra neurere and the more expensive version number 981-000550 981-000257 has been ordered and delivered. Once bought at Quetzel and once at RB deals. Both the wrong version number and went back. The third order was then sales and delivery through Amazon and since everything was fine, so you save the trouble of paying two euros or so more and buy it from Amazon) To headset: Product is 1A. No lags in the transmission, very good sound (previously had an older Sennheiser PC 150), very comfortable to wear, very good micro and after a short period of acclimatization to the surround sound does the location of the enemy wonderful, everything as it should be :)