ExpertPower® 2-wire Surveillance Earpiece PTT Mic for Motorola HT1000 JT1000 MT2000 GP900 GP9000 MTS2000 MT6000 MTX838 MTX900 MTX1000 MTX8000 MTX9000 MTX-LS XTS2000 MTX2500 XTS3000 XTS3500 XTS5000 XTS5100 XTS7700
I have been using this ear piece for over a month and it is one of the best investments I could have made. The ear piece is very comfortable and the mic is clearer than some of its more expensive competitors.  I highly recommended using this in any field environment.