SPEAKER MIC & D-SHAPE EARPIECE FITS MOTOROLA TWO WAY RADIO XT420 XT460 RS-ACC-M1. This earpiece is compatible with Motorola GP300, CP040, DP1400, XTN, XTNI, XTNI-D, XT420, XT460, XT660D. This Speaker Mic has an overall cable length of 60cm with a curly chord and the length of the listen only D-Shape earpiece is 30cm.
eBay