The TTMK III is a tactical throat microphone headset and PTT built for operators conducting tactical missions or frequently deploying gas masks and respirators. In high-noise environments, the TTMK III is both lightweight and low-profile, ideal for those who want superior audio performance without a bulky headset. The TTMK III integrates the best throat microphone for excellent transmission clarity, and the TCI Soundwaves/FC R4 Ear-Coil to provide exceptional audio response. Durable, reliable, and low-profile, the TCI TTMK III is used worldwide by tactical teams, military units, firefighters, EOD teams, hazardous materials teams and Special Forces groups. TTMK III headsets are low-profile, reliable, and also compatible with a wide array of protective masks and ballistic helmets. Dual-radio versions are also available. Custom configurations on request; contact Customer Service TTMK III Kits Include: State-of-the-art throat microphone with adjustable elastic strap and safety release feature High-performance Soundwaves/FC R4 Earcoil (Black) TACT-LITE Earmold set (M, L and XL) or Sound-Attenuation Ear-insert Popular TCI Tactical Push-To-Talk (PTT) made for your specified radio model