With the JBL PartyBox Stage 320, transform any space, inside or outdoors, into a dance floor. Powerful JBL Pro Sound and big thumping bass fill a wide soundstage and get the crowd moving, while their eyes are delighted by an adaptive lightshow synced to your beat. Use the mic and guitar inputs to show off your stage presence. It delivers up to 18 hours of playtime and the solid telescopic handle and wide, sturdy wheels mean you can roll the JBL PartyBox Stage 320 just about anywhere, and the splash-proof construction means a little rain won't ruin the fun. Make your good times even better with JBL PartyBox Wireless Mics. Plug them into any JBL PartyBox speaker, or use the dongle for the freedom of a wireless connection, and indoors or outside, you'll sound clear and captivating. A built-in foam pop filter minimizes any extraneous vocal sounds. Up to 20 hours of play time and you can even use a mic while it's charging on the PartyBox's built-in power bank. Even the best parties have to end sometime, but your JBL PartyBox Stage 320 can keep the vibe going twice as long with this JBL Battery 400. When your rechargeable battery is running out of juice, it takes just seconds to pop a fresh battery into the slot on the back panel. Double the great times, and enjoy the peace of mind that comes with an official JBL battery. It also can replace the rechargeable battery inside a JBL Xtreme 4 wireless Bluetooth™speaker when it starts to degrade. Each battery comes in FSC-certified packaging printed with soy ink.