Single-Wire Surveillance Mic Kit for Motorola Radios HT1000 MTS2000 XTS1500 XTS2500 XTS3000 Astro XTS5000 XTS7700 PR1500 S47 Professional Series Kevlar Reinforced PU cable, Heavy Duty Design Quick Disconnect earphone adapter for easy upgrade Single Wire acoustic tube for left or right ear compatibility Clothing clip assembly: 360 rotation (6) Skeleton Ear inserts included (small, medium and large) left and right for easy fitting.