The Plantronic Blackwire 5220 USB Type-A Stereo Headset is a complete audio solution for the home or office. This headset features both 3.5mm and USB Type-A connectivity options, so you can use it with a variety of computers and mobile devices, thanks to the removable inline control. The Blackwire can unplug from it and be used as a pair of headphones, or a headset, for any 3.5mm-compatible device. Reconnect to regain access to the remote, and USB Type-A connectivity with a desktop or laptop computer. The Blackwire 5220 headset has been designed for all day use, which is why it features a cushioned metal headband for durability and comfort, as well as leatherette ear cushions, which fold flat for easy storage. When using them all day, you can jump back and forth between calls and other audio, like your favorite music, thanks to the Dynamic EQ. Dynamic EQ automatically adjusts and optimizes the audio settings between phone calls and multimedia.