The JBL by Harman PartyBox 520 Bluetooth LED Speaker delivers big, thumping sound to jumpstart your party! Crank it with confidence, knowing AI Sound Boost will analyze your music in real-time and maximize acoustic performance with less distortion. A built-in lightshow grooves to your music. The sound might be heavy, but this PartyBox is easy to move thanks to a telescoping handle and built-in wheels. Pair 2 or 3 PartyBox 520s (additional unit not included) or link with other JBL Auracast-enabled speakers (not included) for an even wilder dance party. This JBL portable speaker also features a splashproof design. Rechargeable battery powers it for up to 15 hours of playtime.Manufacturer model #: JBLPARTYBOX520. Big, thumping sound AI Sound Boost analyzes in real-time and maximizes acoustic performance with less distortion Built-in lightshow grooves to the beat Telescoping handle and built-in wheels for portability Can be paired with 2 or 3 PartyBox 520s Can be linked with other JBL Auracast-enabled speakers Splashproof design