'ZDNET Recommends': What exactly does it mean?
ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing.
When you click through from our site to a retailer and buy a product or service, we may earn affiliate commissions. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay. Neither ZDNET nor the author are compensated for these independent reviews. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers.
ZDNET's editorial team writes on behalf of you, our reader. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. If we have made an error or published misleading information, we will correct or clarify the article. If you see inaccuracies in our content, please report the mistake via this form.
These bone-conduction headphones are 'swim-ready'. I put them to the test
Is it because I'm a broken Gen Xer who requires constant stimulation and entertainment? Or is it because I have such a great collection of music and audiobooks that I can't bear to leave behind? I don't know, but nowadays it's rare to find me anywhere without headphones or earbuds of some description.
Also: Best headphones for working out
I love the power and versatility of my AirPods Pro. And I wear my Shocks OpenRun Pro bone conduction sports headphones when walking, hiking, and cycling because they don't cut me off from my surroundings. But there's been a gap in my headphone-wearing needs: swimming.
Not anymore!
Now, I have the H2O Audio Sonar Pro underwater headphones, and I can't see myself bringing anything else to the next pool party.
View at AmazonMaking headphones that work underwater can be a trivial challenge. Not only do they need to be fully waterproof and easy to control, but they cannot rely solely on Bluetooth -- because this wireless technology doesn't work reliably underwater. In fact, Bluetooth range underwater is reduced from as much as 240 meters (800 feet) to less than 8 cm (3 inches).
To get around this limitation, it is recommended that you pre-load audio onto the headphones using Playlist+ technology.
How does this work?
Simple.
Connect the headphones to the charging cable, plug this into a PC or Mac, and the headphones appear as an external storage drive onto which you can load music, podcasts, and other audio files (note that you can't use files that are protected by any digital rights management/DRM as found on Spotify and Apple Music).
The Sonar Pro includes 8GB of storage, so there's plenty of room for your favorite tunes.
Also: This thumb-sized camera is my new 'must-have' for traveling
For the record, the Sonar Pro headphones are rated IPX8, meaning they can be submerged in water indefinitely.
Swimmer wearing H2O Audio Sonar Pro.
Alternatively, if you have a waterproof smartwatch, you could set it up so the watch is close to the headphones. H20 Audio even makes a special holder for the Apple Watch to hold it on the strap of your goggles, close to the headphones.
Also: iPhone went for a swim? Here's how Siri can help eject water from its speakers
To control the headphones, there are buttons on the side of the unit. As with most controls that are out of your sight, they can take some time to get used to, but once your fingers figure out where everything is, it all becomes second nature.
The controls on the H2O Audio Sonar Pro are big and easy to use.
The headset comes with a single proprietary magnetic charging cable (so don't lose it!) that plugs into USB-A. (I wish this was USB-C because most things are these days.) The cable is used for both charging and transferring files.
Proprietary magnetic charging cable
Onto the main bit -- do they work underwater?
Yes, they work incredibly well. Both music and spoken word comes across crisp and clear, and the overall experience is great. Sure, the quality is not on par with the likes of the AirPods Pro, but given that the Sonar Pro headphones are transmitting sound through my skull while I'm underwater, I'm happy with the experience.
Also: Best headphones (and whether they're healthier to wear than earbuds)
It does take a little time to get used to how these new bone-conduction headphones work compared to regular headphones; but if, like me, you're coming from other bone-conduction headphones, the transition is a smooth one.
If you don't want to have water in your ears, the Sonar Pro kit comes with earplugs that not only improve comfort but improve the quality of the audio.
Supplied earplugs
At the time of writing, you can pick up the Sonar Pro headphones from Amazon for $160. But even without the discount, they're competitively priced and offer something your AirPods don't.
If you've dreamed of swimming to your favorite tunes, well, now you can!