FOXPRO Prairie Blaster Digital High Performance Game Call Quad speakers: one SP-55, one large cone, two small tweeters, Auto Volume, when activated automatically ranges sound up/down for hands free hunting, Built-in-decoy - this remote controlled coon-tail furball decoy adds the element of visual movement, Three playback modes: Continuous (default) - plays sound until you stop it, Single - plays sound once, Sequential - plays one sound than advances to next sound, Power saver made for extended battery life.