Sennheiser PC 141 product# S1-PC141 The PC 141 is a behind the neck, binaural headset. Ideal for gaming, internet telephony and other voice over IP applications. Robust microphone for high speech intelligibility Stereo headset with single sided cable Noise cancelling Extremely comfortable neckband design Adjustable microphone position Suitable for Internet telephony and VOIP applications Voice recognition In-line volume control and microphone mute switch Usable with CD/DVD/MP3 players Skype certified Delivery Includes 1 PC 141 2 x 3.5mm stereo jacks for both voice and mic PC sockets