Universal dock to charge and play iPhone or iPod while docked - enjoy your music while keeping your iPhone or iPod fully charged -SRS TruBass sound enhancement - digital sound processing to give your music extra bass and clarity -Operates on 4 AA batteries or included switching power supply - play music anywhere in battery mode, or play and charge your iPhone or Pod using the AC adaptor -Aux-in jack - listen to aux audio sources (e.g., computer, CD player) -Universal 100/240V AC switching power supply -Protective zippered case -Splash proof material and heavy duty zipper to protect against weather - IP37PVC
