The RECON EH-1300 series is a surveillance-style, listen-only acoustic tube earphone that allows you to privately and comfortably monitor incoming communications. The acoustic tube is easly removeable using our NEW twist connector, which makes it easier for multiple users to share the same earphone using separate eartubes. The RECON is available in three different cable lengths/styles. (SC = 15" coiled cable; XC = 25" coiled cable; X = 30" straight cable.) For use with radios, speaker mics, or audio accessories with a dedicated earphone jack.