SONAR Underwater Headphones with MP3 & BT

ALL-IN-ONE Underwater Headphones with MP3 player & Bluetooth

SOUND YOU CAN TRUST: H2O Audio's bone conduction technology delivers clear sound under water - HASSLE-FREE. The speaker attaches to your goggles and delivers constant fail-safe sound. No earplugs needed!

MP3 PLAYER BUILT-IN: The SONAR headphones are equipped with a built-in MP3 player with 8GB of memory which can hold thousands of songs. Easily connect with MAC or PC and download your favorite music or podcasts. SONAR supports Apple iTunes music format (.m4a) and MP3. Simply copy/paste or drag & drop any music from your computer onto the SONAR and enjoy your swim.

EASY TO USE: The SONAR's small and compact design makes it seamless for your swim. It is easy to use with big buttons that have extra raised markings.

BLUETOOTH with SMART WATCH: SONAR can receive music from your smart watch over a wireless Bluetooth connection. Just pair your smartwatch (Apple Watch, Fitbit, Garmin Samsung, etc.) with the SONAR and attach the watch on your swim goggles. *NOTE: SONAR Bluetooth range under water is about 4". Smart watch MUST be attached to your goggles (not on your wrist) for Bluetooth to function properly. Wireless range on air is 30ft/10m. AVAILABLE - APPLE WATCH CLIP for SONAR is HERE.

100% WATERPROOF: H2O Audio Waterproof technology ensures that SONAR performs when submerged to 12ft (3m). Waterproof Rating: IPX8.

LONG BATTERY LIFE: 7 hours of play time and memory capacity of over 2,000 songs (8GB). Download all your favorite music and the laps will fly by.


Bone conduction is the transmission of sound to the inner ear primarily through the bones of the skull, allowing the swimmer to hear audio content without blocking the ear canal.

The Sound You Can Trust!



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Customer Reviews

Based on 160 reviews

Should of ordered via Amazon! Would of saved the border fees. Otherwise works great.

Lora Miller
Sonar underwater headphones

Love these headphones

J Kevin McKinney
Works surprisingly well!

I purchased this to listen to audio books while lap swimming. Wearing ear plugs, the audio quality is quite good but might be better listening to music. With an audiobook, you lose occasional words or phrases when water sound overwhelms the device audio … for example when doing a fast set or a flip turn. If you tend to splash much then this would be a problem. Style of narration also makes a difference … if multiple voices with variations in voice volume, it doesn’t work well. But good for podcasts, lectures or books with limited character voices. This device definitely makes my time in the pool go by more pleasantly!

David Molesworth
Better than expected

The sonar underwater headphones arrived within 3 days to the UK which was quicker than many local firms so impressive on H2O's part. Have only used the phones on bluetooth which gave a better range than expected with the phone on the poolside, small 15M pool and mostly head above water.

Sound quality is also good for bone conduction phones and construction pretty solid.

Thanks H2O

Frank Schmitteckert
Best stand-alone-player

So, what can i write...
I'm a swimmer. Poolproofed, Trainer outside givin' commands... but this was long time ago in the 90s. Now... older.... after a long period of medical tests and illness, I started again swimming ... after 30 years...competative swimming turned into hobby swimming, without the Trainer outside the pool.
My girlfriend today is also a swimmer, she had this bone conduction music player and I laughed at her. (so I should be wrong)
Swimming and music... ha, no way.
But I tried, after many laps, and thoughts... (I runned with a player, I drive car with music, even the morning shower I listen to my favorite beats).
Nobody is givin Commands any more. so I tried.
First player was a duplicate, it was my first mistake, then I bought another one, that was the second mistake, didn't work properly too, and the sound was terrible ...
I searched for the original player and found the Sonar from h2o.
So, now can I write: it's the only one.
Nice sound, easy to use, works absolutely fine.
Now I can can listen to my music even in the pool.
Thanks h2o.