Solidly built speaker microphone modeled from the radio manufacturer's original offering but at a fraction of the original cost. Now with a 2 year limited warranty the SPM-600 uses many of the same cables and parts of our other speaker microphones. Custom printing of your company name and logo available for orders over 100 pcs. Includes standard 3.5mm jack for all our different earphone options. IP56 rated for water and rain durability. A 4 OHM speaker is an improvement specifically for the EVX-S24 portable radio.