Midland’s SPK100 External Speaker brings unmatched sound quality with 20 Watts of power, a heavy-duty design with IP67 waterproof and dustproof rating that cuts through the background noise so you won’t miss a message. POWERFUL SOUND 20 Watts to cut through background noise HEAVY-DUTY DESIGN IP67 waterproof and dustproof UNIVERSAL COMPATIBILITY Standard 3.5 mm audio plug for use with all CBs, MXTs and other