JBL Original Pro Sound - designed to deliver impressively rich and clear audio. Optimized long driver separate tweeter and dual bass radiators. IP67 Rated water and dustproof so it is safe wherever you go. Battery provides up to 20 hours of playtime to party through the night. PartyBoost - pair compatible speakers together for stereo sound. Built-in power bank charges devices on-the-go. Built-in 3.6V 7500mAh Li-ion polymer battery. Dimensions: 8.7"W x 3.76"H x 3.67"D. Includes Type-C USB charging cable.