Coodio Tactical Laryngophone Earpiece Throat Mic Headset Bodyguard FBI [Covert Acoustic Tube] Finger PTT Microphone For Vertex Standard EVX-531, VX-241 2 Way Radio Coodio's Vertex Standard EVX-531, VX-241 two way radio tactical laryngophone throat mic earpiece headset is optimized for communications intensive environments in which personnel need to interact with customers while maintaining radio communications. If you are looking to be covert in communications or working in arctic conditions, freezer facility warehouses, building construction, this one will be your keeper. Flexiable laryngophone (Throat Mic) with finger PTT(Push To Talk) will give you the best radio communication experience while on the move(paintball, airsoft match, exercising, fitness, running, crawling...). High quality transparent acoustic tube headset that could hardly be detected by people around you(also reduces electronic radiation), ideal for surveillance purposes and security at airports, casinos, crowd control, conventions, concerts and other working environment requiring discreet communications. Excellent for user in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, party, building construction, stage, studio, hunting, outdoor and noisy environments. Compatible with 1-Pin(with 2 screws) Vertex Standard portable handheld walkie talkies two way radios including EVX-531, EVX-534, EVX-539, VX-231, VX-241, VX-261, VX-264, VX-451, VX-454, VX-459, VX-420A...