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Stone Mountain designs, manufactures and markets a complete line of communication devices, including IP68 waterproof, Mil 810G compliant speaker mic's, audio accessories and custom solutions for LMR, PRC/Mbitr and Smartphone/Tablet/LTE PTT applications. Our customers include public safety, military, industrial, mining, utility, hospitality, transportation & business. Our feature rich products are built and supported in the USA to the highest quality standards.