1-2 Way radio speaker mic for Motorola GP328 2-High quality sound performance. 3-Diameter 4.2 ... :PMMN4002BDetailed description:*Push to talk PTT,reinforced 360 degree back clipApplications:*For MOTOROLA GP327,GP338,HT750,HT1250,GP328,GP339,GP320*Many connector ... types are available and optional for MOTOROLA,YAESU/VERTEX,KENWOOD,ICOM,HYT,COBRA,Two way radio. 2 ...