Sennheiser  PC 120 Single-Sided On-Ear Headset with Microphone Compact PC single-sided headset with microphone for online communication Ideal for online telephone conferences, dictation, transcription, and entertainment Self-adjustable, omni-directional microphone enables clear, comfortable communication In-line volume control and microphone mute switch Fits in either ear; single-sided 9.8-foot cord; 2-year warranty