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Bone Conduction Built for Water

The Sonar 2 Pro uses enhanced bone conduction speakers specifically tuned for underwater sound transmission. While traditional headphones rely on air to carry sound waves, bone conduction sends vibrations directly through your skull to your inner ear. H2O Audio engineered these speakers to maintain clarity in water where standard tech fails.

Built to Last Underwater

PX8 waterproof rating means submersion to 12 feet with no time limit. 8GB internal storage holds 2,000+ songs in MP3 and M4A formats. 10-hour battery life with USB-C charging. Bluetooth 5.3 for pairing on land, MP3 mode for swimming. Includes protective case, charging cable, and swim earplugs.

Secure Fit, Zero Pressure

Forget headbands that slip under your cap or earbuds that pop out mid-turn. The goggle-clip design stays exactly where you put it, with no pressure on your ears or head. At 40% smaller than traditional swim headphones, you'll barely notice you're wearing them.

Your Music Anytime

This is the breakthrough: no more hunting for MP3 files or dealing with complicated transfers. PLAYLIST + is a game-changer. Just play your Spotify playlist on your phone, hit record on the headphones, and the Sonar 2 Pro captures it.

H2O Sonar 2 Pro FAQ's

Everything you need to know before getting started.

The Feed Expert #1The Feed Expert #2The Feed Expert #3

Bluetooth signals don't travel through water (range is only 4 inches underwater). That's why the Sonar 2 Pro has 8GB of built-in MP3 storage. Use PLAYLIST+ to record playlists from your streaming services before you swim, or transfer music files directly via the H2O Audio PRO app.

PLAYLIST+ is H2O Audio's patent-pending technology that lets the headphones "listen" and record audio from any Bluetooth source. Play a playlist on your phone, double-tap the + button on the headphones, and the Sonar 2 Pro captures it to its internal memory for playback during your swim.

Yes—the compact goggle-clip design works seamlessly under swim caps. The included earplugs actually improve sound quality by blocking out water and enhancing bass response, since bone conduction doesn't require your ear canals to be open.

The built-in MP3 player supports MP3 and M4A (Apple iTunes) formats. You can load music via the H2O Audio PRO app (available for Apple and Android) or use PLAYLIST+ to record from any streaming service.

H2O Audio Sonar 2 Pro Underwater Headphones Reviews

H2O Audio Sonar 2 Pro Underwater Headphones Questions

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HomeTraining GearH2O Audio

H2O Audio Sonar 2 Pro Underwater Headphones

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Review Rating: 4.7 /5
(3 reviews)