Tactical Radio Amplified PTT for Headset: NATO/Military Wiring, Gentex, Ops-Core, OTTO, 3M Peltor ComTac, XPI, MSA, Helicopter, & More - Yaesu 2 Pin: FT-65, FT25, FT-4XR, FT-4VRP N: PT PTTV1 03YHW A (Formally TMPTTD03Y A): The Material Comms PolTact Tactical Military Grade Push To Talk(Amped PTT) Adapter For Yaesu 2 Pin: FT 65, FT25, FT 4XR, FT 4VR. Helicopter Helmet Comms Compatible! Compatible w : NATO Military wired headsets w Dynamic Low Impedance Microphones(Most Common): Gentex, Ops Core, David Clark, MSA, OTTO, Noizebarrier TAC, Savox, 3M Peltor ComTac III, IV, V, VI, VIII, XPI, Safariland TCI, Hi Threat, Liberator,