Premium 360 degree stereo sound, 4 speakers plus subwoofer project sound in different directions * Rugged rubber/aluminum roll cage offers best protection against tough jobsite conditions, weather-resistant design means you can use it anywhere * Runs off of Bosch 14.4V to 18V Li-Ion batteries * Advanced digital tuner provides reception in more places along with SD/USB/auxiliary/line-out capability * Charges Bosch 14.4V to 18V Li-Ion batteries, 4-way power outlets, 12V DC adapter, powered USB port