The Throat Microphone has an inline push to talk (PTT) button located approximately 30" from the radio connector on the main wire. Most Throat Microphone models have a 2.5mm remote PTT port on the side of the inline PTT. You can attach a remote PTT button with a 2.5mm plug to the Inline PTT here. When attached, both the main PTT and the remote PTT will activate the PTT function. The remote PTT is helpful for use cases where it is desirable to have an additional PTT button located in another location than your main PTT button.