IFeng 2 PIN Rotating Earhook Earpiece Headset with PTT VOX MIC for Two Way Radio Motorola CLS1413 CLS1450 MV12 MV12CV MV21C ECP100 PR400 A remote microphone with push to talk button you can clip anywhere. It is horizontally adjustable at a maximum of 180 degrees around the earloop, which makes you Left and right ear suitable to wear. The mic is VOX ready. It can work in VOX mode with radios which has built-in VOX function. If your radio does not have built-in VOX function, it can still work in PTT mode. Package Include: 1 X 2 PIN PTT MIC VOX Earpiece for Motorola Radio Compatible with: * XTN XV Series: XV1100, XV2100, XV2600, XV4100 * XTN XU Series: XU1100, XU2100, XU2600, XU4100 * CLS Series: CLS1110, CLS1410, CLS1413, CLS1450, CLS1450C, CLS1450CB, VL50 * Motorola Spirit Series: SV10, SV11, SV11D, SV21, SV12, SV22, SV22C, SU210, SU22, SU22C, SU220 * Spirit MU Series: MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24CVST * Spirit MV Series: MV11, MV11C, MV11CV, MV12, MV12CV, MV21C, MV21CV, MV22, MV22CV, MV24CVS