Speaker – Bluetooth 5.2 – AC Power Supply + Battery – Powerful audio. The JBL Boombox 3 features a durable metal handle with silicone grips, dual side covers, and exclusive dust-resistant and waterproof fabric. It has a redesigned internal structure with a new subwoofer that delivers deeper bass and powerful JBL Original Pro sound with lower distortion. Enjoy 24 hours of playback for workouts and nights out with friends. Connect multiple speakers for virtually unlimited sound using the JBL Portable app.