Pryme SPM-4102
PRYME SPM-4100 Multi-Feature Speaker Microphone. Operates with VERTEX portable radios (See list of compatible products).
Professional quality, water resistant, Built-in 3.5mm jack for optional microphones and earphones, Internally upgradable for future options such as a scrambler, LED illuminated function button.
Meets U.S. Department of Defense environmental standard MIL-STD-810 C, D, E, F, G More...