SPM-2300 Series 2-Wire Lapel Mic Kit w/Twist Connect Acoustic Tube Earphone. 2-wire Kits allow separation of the PTT/Mic unit for more convenient use. The SPM-2300 Kit Includes Bud and Semi-custom Ear Mold.
Motorola unique 1-pin that screws into jack. Used mostly with Motorola BDN6676 and HLN9717 adapters or Pryme PA-BDN6676 and PA-HLN9717 adapters.