PCI Race Radios Crew Chief Headset The Crew Chief Headset by PCI Race Radios is specifically for use with handheld radios. It stands out for the sharp audio it delivers along with comfortable, easy adjustments. Features is the push-to-talk button positioned on the side of the headset, providing quick and easy communication. Features: 3.5mm female audio input jack on ear cup Adjustable mechanical microphone boom Noise canceling microphone Adapter Cables sold separately