... mic Vibration-type sensor unit microphone with pretty good anti-noise performanceDetachable acoustic tube ... Motorola GP328,GP338,GP238,GP308,GP208,GP318,HT1550,PRO5150,RPO5750,PRO5450,PRO5550...Suitable for various two way radios with changeable plug. Throat mic with ... acoustic tube finger PTT for Motorola GP328 two way radio