Three-Wire Lapel Microphone Kits are named as such because they are comprised of three cables using one radio connector. One of the cables has a microphone, the second cable has a remote, Torpedo type Push-To-Talk (PTT) and the third cable has an earphone transducer, professional coiled acoustical tube and Earpiece. This product can be worn discreetly with ease. Its professional and low-profile appearance make it suitable for practically any Assignment. We offer the Pro-Series Coiled Audio Tube or the Soundwaves/FC Tube upgrade. Both options are professional options, but for the best earpiece audio, select the Soundwaves/FC Tube Option.