Pryme Gladiator SPM-1522s Throat Mic for Vertex VX EVX Radios (See List). Compatible with Vertex VX-130, VX-131, VX-132, VX-160, VX-180, VX-210, VX-210A, VX-230, VX-231, VX-261, VX-350, VX-351, VX-354, VX-400, VX-410, VX-420, VX-427, VX-450, VX-454, VX-459, and EVX-530. The GLADIATOR tactical HD throat mic system blocks background noise by picking up sound directly from user's vocal cords. Dual mic elements provide excellent audio and eliminate the throat location placement issues often found with single element products. Has a surveillance style acoustic tube earphone for private communications. Tactical, heavy-duty throat microphone with acoustic earphone. Blocks background noise by picking up the sound of the user's voice directly from vocal chord vibration. Uses PRYME's large TACTICAL TOUCH Push-To-Talk (PTT) which can be interchanged with several styles of optional PTT. (Optional PTTs sold separately.) New single piece microphone for comfort with performance. Heavy-duty construction, featuring polyurethane cable, rubber, and high-impact polycarbonate. Clear acoustic tube style surveillance earphone made of heavy grade surgical tubing. Large PTT button for tactical set-up.