This Kevlar reinforced acoustic tube accessory offers comfort and quality for the professional user who requires a more discreet audio product. The soft earbud fits comfortably in the ear while the acoustic tube fits around the back of the ear. The inline, integrated microphone and push to talk keeps wires tidy and reduces breakage. The 1 wire kit is both lightweight and comfortable making it suitable for prolonged use and daily wear. We would recommend the 1 wire kit for use in noisy environments such as bars, nightclubs and bustling shopping areas. The Mitex OEM 1 wire acoustic tube kit is compatible with the full range of Mitex handheld radios.