DESC: DuoPro Convertible, Over-the-Ear/Over-the-Head Headset Compact, lightweight headset with superior acoustics and sound reception Reduces background noise and incoming loud tones while enhancing call clarity Quick Disconnect lets you leave your desk while the caller remains on the line Converts from over-the-ear to over-the-head style. Best-in-class audio performance. Advanced speaker technology for optimal voice clarity. Unique anti-twist boom ensures noise-canceling microphone stays properly positioned. Speaker pad balances off the ear for clear sound without pressure.