Designed to be worn all day, the Blackwire 5220 Stereo USB-A Headset from Poly features a flexible boom microphone with 280° of ration, plus USB-A and 3.5mm interfaces. The stereo design boasts leatherette-encased, on-ear speakers featuring hearing protection to guard against sounds above 118 dBA. Additionally, the Blackwire 5220 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 5220 folds flat for portability.