2.5mm 1-PIN Acoustic Earpiece Compatible with Motorola Walkie Talkie Two Way Radios models as follow: T Series: T100, T200, T260, T265, T280, T289, T400, T460, T465, T480, T550, T600 H2O, T605 H2O, T4300, T4500, T4700R, T4800, T4900, T5000, T5100, T5200, T5300, T5400, T5500, T5600, T5700, T5800, T5900, T6000, T6100, T6200, T6210, T6220, T6222, T6250, T6300, T6310, T6320, T6400, T6500, T6530, T6550, T6600, T6700, T6800, T6900, T7100, T7200, T7300, T7400, T7500, T7600, T7700, T7800, T8500, T8550, T9500, T9680R; EM Series: EM1000, EM1000R, EM1010TPR, EM1020R; FR Series: FR50, FRS50, FRS60; FV Series: FV200, FV300, FV300AA, FV500, FV600, FV700, FV800; SX Series: SX500, SX600, SX700, SX700R, SX750, SX800, SX900, SX920;MX Series: MB140R, MC220R, MC225R, MH230R, MD200R, MH230R, MH230TPR, MJ270R, MR350R, MR355R, MS350R, MS355R, MT350R, MT352TPR, MU350R, RT210; Compatible with Cobra models as follow: CXT85, PR245, PR560, PR240, PR3100, PR3175, PR350, PR3000, PR4000, PR4250, PR4750, MRHH100, MRHH200, T5620, T5710, T5720, T5920, T5950, T6320, Spirit GT Plus Compatible with Hytera(HYT)models as follow: TC-310, TC-320, TC-1688 Compatible with ORICOM models as follow: PMR780, PMR1200, PMR1280, PMR2180 Compatible with Garmin Rhino models as follow: 110, 120, 130, 530