DEFENDER series QD® QUICK-DISCONNECT Lapel Microphone w/C-Shape Ear Hanger. The unique C style earpiece is similar to the popular D style but ADJUSTABLE so can fit any ear size.
Motorola most popular 2-pin (side) includes: CLS, CP185, CP200, PR400, GP, HT, MTX, PRO seies and includes DIGITAL models.
RELM 2-pin (side) connector which is the same as very popular Motorola 2-pin and fits many radio models including: RPU6500 and RPV6500