Zeadio Covert Earpiece Headset Air Tube for 1 PIN 3.5mm Yaesu Vertex Radio Vx-110 Vx-150 Vx-130 Vx-131 Vx-132 Vx-160 Vx-180 Vx-210 Vx-210a Etc. Excellent for use in police, military, nightclubs, bars, paintball, security,restaurants, hotels, bouncer, warehouses, and noisy environments. Durable and thick cable, designed for tough environment This headset is for All Yaesu/ Vertex radios that required one pin plug