Single-Wire Surveillance Mic Kit for Motorola Mototrbo Digital Radios XPR6100 XPR6350 XPR6550 XPR7550 APX4000 APX6000 APX7000 DP3400 S49 Commercial Series Kevlar Reinforced PU cable Durable Design Single Wire acoustic tube for left or right ear compatibility Clothing clip assembly: 360 rotation