'Underwater Audio logo with blue headphone icon and musical note.'

Fall In Love With Lap Swimming: Meet The World's Most Capable Waterproof Music Player For Swimmers

- No more boring, monotonous laps

- Swim with Music, Audiobooks, and Podcasts

- Fully compatible with Spotify, Apple Music, Audible, Libby, Amazon Music, and more

- Harness the motivational power of music to boost your fitness

- No WiFi required while swimming! Prep playlists at home then swim offline

- No Smartphone required! Completely self-sufficient, all-in-one device.

- Designed and based in the U.S.A (world class support and fast shipping!)

- 12 hour battery life: Most swimmers only charge once per week

- Hold up to 4,000 songs

- 1 year comprehensive warranty

"I’ve been waiting for this product all my life. Service was prompt and delivery fast as well. Have used it for 2 weeks no problems. Wouldn’t hesitate to recommend. One of the best purchases I’ve made this year. Makes laps not boring." - Daniel T.

People All Over The USA

Are Swimming With Music...

Person with swim gear holding a swimming tracker device and earphones, smiling at the camera.
Swimmer in a black and neon green swimsuit sitting by a pool, adjusting a swim cap.
Person with wet hair wearing swim goggles and blue waterproof earphones in a swimming pool.
Swimmer wearing goggles and ear protection, swimming in a pool.
A man in swim trunks wearing earphones by a pool, smiling and adjusting his device.
Woman in a swimsuit with arms outstretched standing in a pool.
A swimmer with a red cap and goggles underwater.
Swimmer wearing a yellow cap, goggles, and colorful swimsuit, with headphones at a poolside.

From the desk of Co-Founder, Scott Walker:

John Hopkins Medicine recently reported that swimming is among the top exercises for heart health and wellness, citing it as one of the most effective exercises for maintaining overall health and wellness. (Source)

Both Harvard Medical, John Hopkins, and others report the numerous benefits of swimming, including the following:

Man speaking on stage at an event, wearing a plaid shirt and glasses.

Scott Walker

Co-Founder & CEO

  • Swimmers are less likely to die from some of the leading causes of death.

  • Swimming… can burn fat faster than activities like running or walking.

  • Studies show that swimming can reduce stress, anxiety, and depression.

  • For those with arthritis or joint pain, swimming is an ideal exercise.

With all these benefits, however, there’s a catch: The Association For Applied Sports Psychology say that as few as 20% of people stick with their exercise routine, despite knowing the risks of letting it slip.

But hey… swimming is hard, and for most people, extremely dull.

So what do you do?

Harness the same powerful source of energy, motivation, and focus that everyone from casual swimmers to olympic champions are now discovering is possible: Music.

Smartwatch with blue earphones, displaying icons for Spotify, Apple Music, Audible, and lap tracking.

Oh. My. God.

This was it.

I don't even remember how I swam without the Delphin for so long.

Listening to Apple Music in the pool is a game changer.

And this is by far the best way to do it.

What I've found is that the lap lanes are rarely filled with people I recognize. They all come and go.

With the Delphin, it turns out, I have more staying-power than the others.

The music and audiobooks turned my pool workouts from a chore into, frankly, a magical experience.

Here's Just a Few of
The Benefits of This Device:

Man smiling by the pool, listening to music with earphones.


The Delphin 2.0 brings the joy of music, the magic of a story, and the endless learning and entertainment of your favorite podcasts to the pool.

Runners, bikers, and weightlifters all know the benefits of motivation and entertainment during long sessions.

Now, for the first time ever, you too can enjoy the same power in a self-contained, tiny-tiny package.

Apps for music and audiobooks, including Spotify, Apple Music, Amazon Music, Pandora, Audible, and Libby, with water droplets.


Spotify, Apple Music, Audible, Amazon Music, Pandora, Libby, and more...

If you can't find the app you love to listen to on the Delphin, you might be from another planet!

Swimmer wearing a colorful swimsuit and yellow swim cap with a digital device at a pool.


The Delphin clips comfortably to your goggle strap with an ultra-secure, built-in spring clip. It's overall surface is about the size of a saltine cracker, and it weighs only a few ounces.

Most swimmers say they forget they're wearing it altogether.

A rugged, partially submerged electronic device in water with a visible screen showing app icons.


We've over-engineered the Delphin 2.0 and its accessories to be highly durable and completely waterproof. We conduct extensive testing at our facility in Corvallis, Oregon to ensure that the Delphin is truly ready for anything.

Man with swim gear and gadgets by a pool.


These days, most niche tech products come from massive design houses overseas, pumping out generic trash.

At Underwater Audio, we're different.

We are, and have always been, based in the USA. We're a small, tight-knit team, passionate about creating the best possible lap swimming experience for everyone.

And that's not all. The Delphin includes all the above qualities and more:

Swimmer adjusting a swimming cap in a pool.


We stand by the quality and care we put into our products. That's why every Delphin 2.0 bundle includes a comprehensive 1-year warranty.

If anything ever goes wrong, just give our US-based support team a call and they'll get you sorted right away.

Circular 'Happiness Guaranteed 100%' seal in yellow with smiley faces.


Speaking of our support team... We've got an incredible US-based crew that is ready to help answer any questions about your device.

They can even help you set it set up perfectly to suit your needs, and are eager to assist in any way.

A woman in swim gear holding a small electronic device and earphones.


Other products which attempt to emulate the Delphin require that you leave your smart phone poolside to actively stream music... YIKES!

The Delphin is 100% independent and requires no WIFI or smartphone connection while you swim.

I love the Delphin so much, I've had to share it with everyone I know.

What People Have To Say

The best!

"I’ve used this a few times now and have been very pleased... I've had zero issues... Very satisfied with this purchase!"

Diana W.

Verified Buyer

Waterproof MP3 player with earbuds and a small tube of aqua guard gel.

Love this so much

"I use this windsurfing. The sound is awesome and it adds to the beauty of the experience on the water! Thank you so much!"

Margie I.

Verified Buyer

Smartwatch with fitness tracking apps, two earbuds, and a small blue bottle.

Best ever

"I have received and loaded my music, it has great sound, can't wait to do laps again when the pools open back up! Underwater Audio is the best company I have worked with. I have had many years with there product, you can't go wrong! I highly recommend all there products."

Patrick H.

Verified Buyer

Blue waterproof MP3 player with a screen and bone conduction headphones.

BUY THIS - it is a miracle device.

"I love swimming, but I love it way, way more now that I can listen to my Spotify playlists. The Delphin is the only device on the market that lets you listen to Spotify, Apple Music, Audible and the like while swimming, and it is really well designed.

Allison J.

Verified Buyer

From My House to Yours: Underwater Audio

Now I'm able to enjoy my time in the lap pool, and truly stick with my routine. No more "forcing" myself to swim.

This is all thanks to my invention, The Delphin.

I know this may be your first time as an Underwater Audio customer. This is likely your first time trying a 100% waterproof music player.

So I have a deal for you.

I know you're going to love the Delphin 2.0. After one swim, you'll never go back to swimming in silence.

Today, you can get everything you need to start enjoying music, audiobooks, and podcasts in the pool... for $50 off!

You're going to love the Delphin 2.0.

I can't wait to hear about your experience.

Smart player for swimming, Delphin 2.0, on sale for $50 off.




Current status: In stock.
Your order will ship today.






waterproof smart player
for swimming

Swimmers around the world are making the switch... MORE

Swimmers around the world are making the switch. Why train in silence when you can boost your motivation and endurance with your favorite music, podcasts, and audiobooks? The Delphin enables aquatic athletes to enjoy apps like Spotify, Apple Music, Audible, Pandora, Libby, and more... all underwater! Every Delphin includes Swimbuds Sport waterproof earbuds for premium sound and customizable, watertight fit.



Choose your bundle:

Pay in 4 interest-free installments with

$ 270.00 USD


Save $50.00

Swimbuds Sport / 16 GB

Swimbuds Bone Conduction 2 / 16 GB

Download Spotify,
Audible & more

16GB of Storage

IPX8 Waterproof

12 Hours of Battery

& Compact

Secure Universal
Goggle Clip

$ 270.00 USD


Save $50.00

Pay in 4 interest-free installments with

Free Shipping

1-Year Warranty

World Class Support

Based in Corvallis, Oregon

30 Day Trial

Send it back stress-free

Happiness Guaranteed

Customer tested and approved

Brands talking about Underwater Audio: Good Morning America, People, The Wall Street Journal, Outside, Esquire, CBS Deals.


Person speaking on stage, holding a microphone, with the name 'Scott Walker' written next to the image.

Scott Walker
Co-Founder of Underwater Audio

'Underwater Audio logo featuring a blue wave and musical note.'