The JBL PartyBox Ultimate fills as much space as you’ve got with superior Original JBL Pro Sound, boosted with an immersive Dolby Atmos experience over Wi-Fi*. Because everyone at a party loves powerful sound whether they're showing out on the dance floor or vibing on the sidelines. Along with sound that's crystal clear even at its loudest, your guests will thrill to a huge, breathtaking lightshow of captivating starry lights, cool light trails, and strobe effects, all moving in sync with your beat. Make it simple by streaming your favorite party playlist. Even take the stage, with inputs for two mics and a guitar. No matter how things unfold, you can create your own party flow using the fun interactive effects of the JBL PartyPad™. Planning something even bigger? Turn your party into a full-on event. Wireless pairing and multi-speaker connection are easy to set up and customize using the JBL One app. The splash-proof JBL PartyBox Ultimate is self-tuning, it's going to sound its best no matter where you set it up. Think of the most supreme party ever—and then go bigger. That's what the JBL PartyBox Ultimate was made for. Dynamic Lightshow Lights, color, party! Transform your space into a captivating,full sensory experience with the biggest multi-dimensional lightshow of any party speaker. It's got a unique starry night effect, cool light trails, strobes, and even lights that project onto any surface it's sitting on. All of it syncs to your music and can be easily controlled via the streamlined, user-friendly dials on the top panel or through the JBL One app. Wi-Fi and Bluetooth Connectivity Stream high definition music anywhere with the JBL PartyBox Ultimate, including 3D Dolby Atmos over Wi-Fi. Taking a call or scrolling your feed? Go ahead—it won't interrupt your music. Switch easily to Bluetooth and keep enjoying seamless audio experiences whether you're indoors or outside. Handle and Sturdy Wheels Get the party rollign with wide, sturdy wheels and an easy to grip handle that makes this big speaker surprisingly easy to transport. A simple but effective cable management setup makes sure the cords never get in your way. IPX4 Splashproof Whether you are partying with friends in your backyard or sipping drinks by the pool, the JBL PartyBox Ultimate is IPX4 splashproof so you never have to worry about the party getting too wet and wild.