![Vertex VX-350 3-Wire Surveillance Kit Earpiece [Stealth] Vertex VX-350 3-Wire Surveillance Kit Earpiece [Stealth]](https://cdn11.bigcommerce.com/s-3f922/images/stencil/200x200/products/907/1280/3_wire_surveillance_kit_earpiece__80688_zoom__74390.1348021919.gif?c=2)
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3-wire surveillance kit earpiece with ring-finger PTT. Now use a three wire even while wearing short sleeves. The micro, ultra-sensitive electret condenser mic with lapel pin can be hidden inside the collar.