Unbeatable Sound All Day Long: The JBL Boombox 4 Bluetooth speaker delivers massive JBL Pro Sound with two Bass Boost modes in a portable, waterproof and dustproof design built for all-day listening anywhere Power Meets AI Precision: This smart speaker provides bold, punchy sound with deeper bass and clearer details thanks to upgraded woofers, tweeters, passive radiators and AI Sound Boost that adjusts audio in real time Keep the Beat Going: Enjoy up to 28 hours of wireless Bluetooth playtime on a single charge, with an extra 6 hours from JBL Playtime Boost to keep the music going even longer Share the Vibe: Use Auracast to connect two Boombox 4 speakers for a wider soundstage or link multiple Auracast-enabled speakers to share music, while selecting Deep Bass or Punchy Bass mode to suit your mood Maximum Clarity: Experience detailed audio playback by connecting the JBL Boombox 4 Bluetooth speaker to your laptop or device via USB-C for richer sound with compatible lossless audio sources