Features " Built in charger function allows for quick, convenient charging of any M18™ battery or electronic devices via USB port " Digital bluetooth receiver: play music up to 30 m away from your smartphone, computer, or tablet " AC/DC versatility: powered by Milwaukee® M18™ batteries, or 230 V mains supply " Exclusive AM/FM tuner with digital processor delivers highest reception accuracy and signal clarity " Premium speaker and 40 W amplifier produce rich, full sound " Weather sealed auxiliary compartment protects Mp3 players and other audio devices " Reinforced roll cage and metal handles protects against abusive jobsite conditions " Customizable equalizer and 10-station preset " Protected 2.1 Amp USB power outlet charges devices in both AC and DC mode " Supplied with auxiliary input cord, 2 x AAA batteries. Milwaukee® batteries sold separately