GoodQbuy Surveillance Covert Acoustic Tube Earpiece Headset for Yaesu Vertex Radio 3.5mm 1-pin 4 Pole VX-231 VX-424 VX-427 VXF-10 VXF-20 VX-10 VX-180 VXF-1 VXT-10 VXT-20 Transparent vacuum pipe makes the microphone covert and comfortable to wear. Dual-core structure with microphone, PTT button and removable vacuum pipe facilitates a covert communication in complex circumstances. The eco-friendly PU wire is made of tensile vectran fiber, which is sturdy and durable. Proper soft ear hanger can be chosen to offer best wearing without hearing affected by surroundings. It is commonly used by patrolman, detective, security guard, escort and other security professionals.