Concerning this item 240W of strong JBL Pro audio With powerful effects and pulses of light, dazzle your audience with a dynamic light show that moves to the music. Long-lasting sound with a battery life of 18 hours Rain or shine, the JBL Partybox 310's IPx4 splash protection ensures that the music continues. Using the Partybox app on your phone, you can control karaoke features, change the light show, change the music, and more. Included are the JBL PartyBox 310, power cord, warranty sheet, safety sheet, and quick start guide. Type of Power Source: Battery-Powered Take it with you wherever you go. Celebrate everywhere! Who says loud music is only found in clubs? Its telescopic handle and smooth-gliding built-in wheels allow you to move the party from your patio to the park and beyond.