Top sound in the l boxx system powerful sound for fmam and mp3 file playback fits perfectly in half a bosch l boxx easy transport with a system connect external players via aux in power supply either with bosch 144 v 18 v lithium ion batteries or using supplied mains adapter10 station presets 5 fm and 5 ampractical storage compartment for supplied mains adapter and aux in cable flexible basstreble adjustment2 x 5 watt neodymium speakers for stereo sound fully functional after falling from a he