This speakermic allows for remote interaction with your radio when mounted to a belt, pouch, pocket, dashboard, or any other situation where the radio is not conveniently accessible to speak directly into. With dozens of inferior options on the market, this is a tested and proven option that gives dependable reliability. It offers a 3.5mm output jack (like a common headphone jack) which pairs well with our 5.5mm Acoustic Eartube Headset for situations where quiet listening is needed. You can also connect directly to earpro such as Howard Light Impact Sport or Walker Razor using this 3.5mm to 3.5mm cable.