Overview The PC 2 headset was developed for user-friendly Internet telephony at home or in the office. With the one-sided wearing style, you can enjoy your conversations while staying in touch with those around you. The lightweight, adjustable headband is comfortable to wear all day long. To make sure you understand everything, the PC 21-II features an improved noise canceling microphone that reduces background noise. This makes the headset particularly well suited for applications with automatic speech recognition. The boom arm is extremely flexible, so you can effortlessly adjust it to any desired seating position. Features - Sennheiser sound quality - A quality driver with excellent acoustic properties ensures that you always hear what is said. - Noise-cancelling microphone - The microphone filters out ambient noise so your voice is always clear and easy to understand. - Reliable speech recognition - The microphone is specially designed for the speech recognition function of your device. - One ear free - Thanks to the one-sided design, you are not cut off from your surroundings when talking over the Internet. - The microphone can be adjusted so that your voice is optimally captured and the microphone fits comfortably. - Lightweight and Comfortable - With the lightweight headband, you'll forget you're wearing a headset.