TR4SM Heavy Duty Ruggedized Titan Speaker Mic for TR400 HYT 2 Pin Radios PD-502 PD-562 TC-500 TC-508 TC-518 TC-580 TC-600 TC-610 TC-620 TC-700 TC-700PT TC-700EX TC-1600 TC-2100

Very please with my new Speaker Mic. I'm pleased the Mic's 2-pin plug came with the locking screw that was shown in the second photo. I was concerned it may just come with the one in the main photo. Speaker is plenty loud and the button does what it's suppose to do. Life's Good. Will order again from Dollar Radio Sales.