TROOPER II® Series HEAVY DUTY SPEAKER MICROPHONES have a Noise Canceling Mic and are designed to meet MIL-STD-810 mechanical and IP57 Dust and Water Proof standards. Troopers also have a 3.5mm earphone jack and 2-year warranty.
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.
