PolTact V2 Tactical Comms Helmet Headset w/ Active Hearing Protection - All Kenwood Multi-Pin TK & NX SeriesP N: PTH V2 11: New Material Comms PolTact V2 Headset w Active Hearing Protection Headset Designed For Public Safety. Featuring Quick Replace design for the Headband & Rear Helmet Mounts(Optional Add On) For Kenwood: NX 200, NX 210, NX 300, NX410, NX 411, NX 3200, NX3300, NX 5200, NX 5300, NX 5400, TK 190, TK 2140, TK 2180, TK 280, TK 290, TK 3140, TK 3148, TK 3180, TK 380, TK 385, TK 390, TK 480, TK 481, TK 5210, TK 5220, TK 5310, TK 5320, TK 5400,