This deluxe megaphone comes with a selectable electronic siren. It is weatherproof. This device is used for electronic and industrial applications.Product Features:Manufactured by SepcoWattage 16W MaxEffective 800 feetPowerful solid state megaphoneBuilt-in switch selectable electronic alarm sirenPistol gripPress-to-talk switchVolume controlShoulder strapDurable weatherproof constructionOperates on 8 "C" cells (not supplied)Required 3lbs are required batteries which are not includedWatercraft Parts and accessoriesDimensions: 9"H x 14"W x 9"DMaterial(s): metal