JBL BOOMBOX 4 Waterproof Bluetooth Speaker (Blue)Were talking massive sound with deep and punchy bass. The redesigned JBL Boombox 4 packs in two bigger woofers, two tweeters and three passive radiators, so every track hits harder and sounds cleaner. And with AI Sound Boost, you dont have to lift a fingerthis smart tech analyzes the music in real time and adjusts the sound to give us more power with less distortion, even when its turned all the way up. Up to 34 hours of playtime Keep the vibe alive