JBL Boombox 4 Portable Bluetooth Speaker, Waterproof, Deep Bass – Black

We turn it up our way—anywhere. The all-new JBL Boombox 4 is bigger, bolder, and built to hit harder, with massive JBL Pro Sound that stays loud and clear no matter how far you crank it. Two bigger woofers, two tweeters, and three passive radiators work together to make every track feel like an event. And AI Sound Boost is quietly doing the heavy lifting in the background—analyzing your music in real time, adjusting the sound to keep things powerful and distortion-free, even at full volume. When it comes to bass, you’ve got options. Hit the Bass Boost button and drop into Deep Bass mode for that low, earth-moving rumble. Tap it again and Punchy Bass kicks in—tighter, more energetic, ready to match a different kind of mood. Up to 34 hours of playtime means you’re covered from the backyard cookout well into the night, and if you need a little extra, JBL Playtime Boost adds up to 6 more hours when you need it most. Built for wherever the vibe takes you—beach, boat, block party—the IP68 waterproof and dustproof rating means weather is never a dealbreaker. We redesigned it to be lighter than before too, so it’s actually easy to bring along. Pair two Boombox 4 speakers via Auracast for stereo sound, or connect additional Auracast-enabled JBL speakers to spread the playlist further. With the JBL Boombox 4, we carry the mood and the energy, everywhere we go.

JBL PRO SOUND + AI BOOST: Massive sound, deep thumping bass—this portable Bluetooth speaker packs two woofers, two tweeters, and three passive radiators. AI Sound Boost analyzes music in real time, dialing up power with less distortion even at full volume.
34-HOUR BATTERY: Keep the vibe alive from party to party—up to 28 hours on a single charge, plus 6 more with Playtime Boost. For a portable speaker built for the long haul, this one doesn’t know when to quit.
IP68 WATERPROOF BUILD: Beach, pool, backyard—these waterproof speakers laugh at spills, splashes, and surprise rain. An IP68 rating means fully waterproof and dustproof protection, so weather’s never a dealbreaker.
TWO BASS BOOST SETTINGS: One button, two moods. Switch between Deep Bass for those chest-thumping lows or Punchy Bass for tight, energetic hits—because the vibe is yours to dial in. Why settle for one?
BIGGER SOUND, LIGHTER CARRY: Same iconic boombox look, redesigned with a lightweight design and carry handle for easier transport. Bluetooth 5.4 keeps the connection rock-solid—grab it and go.