Tactical Command Industries designed the TTMK - III Tactical Throat Microphone Headset for use with gas masks, APR's or respirators, but is even a popular headset choice for teams looking for a high-performance headset system. Microphone audio is produced by a high-quality throat microphone, while received transmissions are heard in the ear by a Soundwaves/FC R3 earpiece kit. With the TTMK - III, there is no boom microphone to get in the way of high-speed, low-drag missions. Built to exceed military and industry standards, the TTMK - III integrates throat microphone and high-quality earpiece with an adjustable elastic harness providing adjustability and comfort to the throat microphone.