Motorola SYN1505A Headset Adapter provides a headset connection for use with your standard headsets. Enjoy handsfree audio through your own wired headset.EMU to 2.5mm Phone Compatibility: MOTOKRZR K1, MOTOKRZR K1m, RAZR V3, RAZR V3c, RAZR V3i, RAZR V3m, RAZR V3r, RAZR V3xx, RAZR MAXX Ve, Q, W385