Details: Pryme Defender premium D ring headste with push talk for Icom 2 pin portable radios. Includes a Two-Year Warranty! Part # SPM-1230S Compatible Models F11, F21, F14, F14S, F24, F24S, F33G, F43G, F43TR, F3001, F3011, F3021, F3021S, F3021T, F4001, F4011, F4021, F4021S, F4021T, F3101D, F4101D. 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