The Plantronics Blackwire C3210 Headset - 209744-104 is part of the Plantronics 3200 headset range, designed for optimum call quality, convenient call management and all-day wearing comfort. The adjustable headband carefully wraps around your head for an elegant fit that makes all-day call communication that much easier to get through. The headphone and microphone combination is incredibly high-quality, boating incredibly precise audio clarity to ensure your calls are as professional and informative as they need to be. The USB-A connector facilitates a secure and reliable connection, and feeds into the in-line controller, where you can oversee critical aspects of your call. From mute, to volume control, to answer/end, to redial functions, the Plantronics Blackwire C3210 Headset - 209744-104 truly puts it all right at your fingertips.