Runs on any milwaukee battery. Exclusive AM/FM tuner with digital processor, premium speakers and 40 Watt amplifier, weather sealed auxiliary compartment to run MP3/IPODS etc, shock absorbing ABS polymer and steel construction, customizable equalizer and 10-station preset, AC outlet, built-in bottle opener, 12V/DC output provides power to charge most small electronic devices, durable cord wrap stores the 6 ft. AC cord. Specs: 12V-28V batteries including M series, V series and NiCad, 120V/AC, amplifier 40 Watts, 4" speakers high performance poly, digital display, customizable bass and treble equalizer, digital reception with signal processor tuner, auxiliary input 1/8" stereo jack, power output 12V/500mA vehicle charger, dimensions 19.5"x9.5"x11", weighs 17.5 lbs. Includes: (2) AA batteries, auxiliary cord.