RESPONDER MEDIUM-DUTY LAPEL MICROPHONE w/Soft Ear-Hook Earphone. Our most popular model is light, versatile and rugged.
Fits many HYT models including: TC-1600, TC-500, TC-600, TC-610, TC-620, TC-700, TC-700EX
Very similar to the Motorola 2-pin except this one has a screw to lock it in place.