The iP46 is a sleek speaker system that's ready to rock anytime! The iP46 includes SRS TruBass circuitry and 4 speakers in Reson8 chambers for an exceptional audio experience. The retracting universal dock charges and plays iPhone and docking iPod models. The built-in lithium-ion battery is rechargeable, so you can enjoy music anywhere without worrying about batteries. Remote Control Inlcuded.