Designed for use in mass-deployment enterprise environments, the Blackwire 3210 USB Type-A Corded Monaural UC Headset from Plantronics is easy to install and supports UC Toolkit resources. This noise-canceling headset features a flexible boom microphone and a USB Type-A cable for connecting to most Macs and Windows PCs. The monaural design leaves one ear open while the other ear is covered by a leatherette-encased, on-ear speaker featuring hearing protection to guard against sounds above 118 dBA. Additionally, the Blackwire 3210 Headset comes equipped with inline controls that let you answer, ignore, end, hold, redial, and mute calls, as well as adjust the volume. The inline controls can also be used to control music and other multimedia applications. When you're finished with your call or multimedia application, the Blackwire 3210 folds flat for portability.