Nuance Dragon Monoaural USB Headset with Built-in Noise Cancellation - Official Headset   Dragon speech recognition software keeps your hands free for superior performance Classic headset design Adjustable single earpiece Noise cancelling microphone Connects via USB   Designed specifically for use with Dragon speech recognition, the Dragon headset provides superior audio input quality with noise-canceling technology to improve speech accuracy. It connects via USB and delivers enhanced digital audio quality every time. The easily adjustable earpiece (right and left ear) and hypoallergenic ear cushions ensure a comfortable fit.