Advanced technology tuner for high reception and clarity. Powers from either M12™ battery or 230 V mains supply. At least 8 hour run time on a M12™ Milwaukee© battery. Weather sealed auxiliary compartment protects Mp3 players and other audio devices. Digital display tuner for accurate signal selection. Mute button for instant volume kill. 220 - 240 V power adapter, 3.5 mm jack plug for auxiliary connection, i.e: iPods