Catalog > Consumer Electronics > Audio and Video Communication > Speakers SR85 Megaphone 12V 18W rms SR85 Megaphone with loose Microphone, Siren and shoulder hanging strap MEGAPHONE SR85 MEGAPHONE 18W RMS 12V LOOSE MIC + SIREN Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Power Output : 16W (rated) 20W(maximum) Power Source : SUM-2(size C) dry cell 8 pcs Power Duration : appro x 6 hours Power Consumption : below 20 watts (at rated output) Microphone : Anti-howling Dynamic Microphone Effective distance : appro x 400m Dimensions : 230 m/m (horn dia) 367 m/m (length) Weight : 1.5 kg (without batteries)