... ,GP338,PRO5150,PRO7150 3. GP380,XTS750, MTX900 4. With dual jacks two way radio adaptor for MOTOROLA GP328,GP338,PRO5150,PRO7150,HT750,HT1250,HT1550 ... ,PTX781 etc ..Dual jacks,allowing operation of an remote earphone with standard plug used for motorola GP300/GP3688 etc. two way radio adaptor motorola ...