Twin right angle: Ear 2.5mm stereo (top pin), Mic 3.5mm stereo (bottom pin) Distance between two pin: 5mm Clip-on microphone combined with PTT (Push to Talk) button The acoustic tube fits snugly to your ear canal and keeps your conversations private Hands free compatible with radios that are hands free capable Compatible Ham Radio Model:
Motorola VHF / UHF Spirit, Spirit Pro, Spirit Pro+
Motorola Spirt Series: SV10, SV11, SV11D, SV21, SV12, SV22, SV22C, SU210, SU22, SU22C, SU220
XTN Series: XTN446, XTN500, XTN600 XTN
XV Series: XV1100 XV2100 XV2600 XTN
XU Series: XU1100 XU2100 XU2600
CLS Series: CLS1110, CLS1410, CLS1413, CLS1450, CLS1450C
M Series: MV11, MV11CV, MV12, MV12CV, MV21C, MV21CV, MV22, MV22CV, MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24CVST
CP Series: CP88, CP100, CP150, CP200 VHF / UHF
GP Series: GP2000, GP2100, GP300, GP 308, GP68, GP88, GP88S
SP Series: SP10, SP21, SP50
CT Series: CT150, CT250, CT450, CT450LS
PRO Series: PRO1150, PRO2150, PRO3150
P Series: P040, P080, P100, P110, P1225
Other Series: GTI, GTX, LTS2000, VL50, VL130, PMR446, ECP100