If Das Boot had a Bluetooth speaker playing the submarine’s intercom, this would be it. The Anker Soundcore Boom 3i isn’t just ready for summer, it’s ready for naval warfare. Built like a depth charge and twice as loud, this saltwater-resistant beast floats, blasts, and shoulders the sand like it’s already been through basic training. This isn’t your cousin’s beach speaker that gives up after a splash and some sunscreen. This is the Kriegsmarine of waterproof Bluetooth speakers.
With an IP68 rating, the Boom 3i can be fully submerged and still play MC5 as if nothing happened. And thanks to an industry-first Floating Playback Design, it doesn’t just float, it stays upright and keeps the sound pointed at your ears, not the seabed. Paddleboarding with Wagner? You bet. Kayaking for a swim ? Absolutely.
The self-cleaning Buzz Clean feature may sound like it was borrowed from a sci-fi submarine, but it’s very real and surprisingly useful. With the press of a button, it shakes off sand, water, and the aftermath of your last beach disaster. Need endurance? You’ll get up to 16 hours of playback at 50% volume. Need bass? The Boom 3i delivers 50 watts of low-end thunder with Bassup 2.0, reaching down to 56Hz. And with saltwater resistance rated at 5x the industry standard, you can toss it in the ocean and pick it back up hours later, without a single spot of rust.
Whether you’re hosting a poolside riot, kayaking into the unknown, or just annoying your neighbors with German industrial techno, this is your floating fortress of sound—and we all need it right now.
Built like a brick subwoofer: survives on salt, sand, and stupid decisions
The 3I sound boom isn’t just rugged, it’s borderline indestructible. It can withstand dust, dirt, and total submersion of up to 1.5 meters for 30 minutes. Whether it’s submerged in the deep end or buried in the sand at the beach, it keeps the music going like nothing ever happened.
Its reinforced and corrosion-resistant coating can last for three years . That’s more than most beach chairs and boat anchors. And thanks to drop tests on concrete from over five feet, it’s also resistant to a little gravity.
This speaker’s idea of a bad day? Being used gently indoors.
Outdoor Safety Ready: Indoor Emergency Alarm and Voice Amplifier for Adventure and Survival
The voice amplifier lets you record a message through the app and blast it through the speaker, in case you get lost in the Ozarks and need to scream, “Wendy, this is your fault!” without alerting the cartel. Of course, it only works if you still have your phone and aren’t currently drowning in a muddy riverbank, but when you’re deep in Langmore country, any backup plan is better than none.
The real star of this backcountry survival kit? The emergency alarm. Hold down the Bassup button for five seconds, and you’ll unleash a 96dB sonic flare. That’s loud enough to cut through the thick timber of the Ozarks, the hum of a bass boat, or Wyatt’s philosophy on life on a dock. It’s audible up to 100 yards away and could be the difference between being rescued… or ending up with an FBI missing person flyer pinned to a corkboard at the gas station next to a homemade advertisement.
Key Features:
- Floating playback Keeps the speaker upright and floating in the water
- IP68 rated : Fully waterproof, dustproof, and sweatproof
- 5x Saltwater Resistance : Rustproof and built for brutal beach days
- 50W Output with Bassup 2.0 : Deep and strong bass up to 56Hz
- Self-Cleaning Buzz Clean Mode : Dries and cleans itself – yes, really
- 16 hours of playtime + voice amplifier, emergency alarm and app control
- Detachable strap for hands-free carrying through surf and sand
The bottom line
Soundcore’s Boom 3i may not have the boutique sheen of Devialet, the name recognition of JBL, or the audiophile polish of Dali. But when the waves rise, the trail disappears, or you’re stuck in Sinai with a stuck Jeep and no cell service, guess which speaker is still ringing and calling for help? This thing isn’t just loud, it’s useful . At a fraction of the price of its prettier competitors, it’s built to survive what they wouldn’t dare attempt: salt water, sandstorms, concrete drops, and complete desert collapses.
Looks and sound are good, but when the world gets unpredictable, the boom 3i is what you want in your bag.
