Pryme Defender SPM-1242 Earpiece for Vertex VX-120 127 170 177 6R 7R Radios. The DEFENDER is a medium-duty lapel microphone with a D-loop style earphone. The combination microphone-PTT features a 360 degree rotating clothing clip that can be used to secure the microphone to the user's shirt. Rugged lapel mic with surveillance style D-Loop earphone. The D-Ring is a secure yet comfortable style earpiece that provides outstanding receive audio. The patented swivel earpiece design allows for longer lasting strain relief. High-quality electret condenser mic element produces excellent transmit audio. Rugged, polycarbonate housing allows for maximum durability. A large, metal clip secures the mic/PTT element to the user's lapel or collar. Conveniently located PTT button for easy use. Features Dual Switch Technology (DST) for maximum PTT durability.