The JBL Boombox 4 is a powerful, IP68 waterproof/dustproof portable speaker with Bluetooth 5.4, featuring 210W RMS power (2x 65W woofers, 2x 40W tweeters) on AC, 200W on battery, and a 37Hz-20kHz frequency response, offering up to 34 hours playtime (with AI Sound Boost) and Auracast, plus power bank functionality via USB-C. It’s built with recycled materials and has a replaceable battery, delivering robust sound with powerful bass and clear highs for indoor/outdoor use, with JBL Portable app support for EQ settings.