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H2O Audio Sonar 2 Pro: For serious swimmers
23 Mar
Summary
- These headphones are designed specifically for swimming, not other activities.
- They feature bone conduction technology and an IPX8 waterproof rating.
- A built-in MP3 player with 8GB storage circumvents Bluetooth issues underwater.

The H2O Audio Sonar 2 Pro headphones are meticulously designed for serious swimmers, prioritizing performance underwater above all else. These headphones attach to a separate headband, ensuring exceptional stability during intense aquatic activity, a unique feature among competitors.
Their design incorporates bone conduction drivers, providing an IPX8 waterproof rating that allows submersion up to 12 feet. To overcome Bluetooth's limitations in water, the Sonar 2 Pro includes an 8GB internal MP3 player. This built-in storage enables music playback without a connected device, though initial music loading is via a charging cable, reminiscent of older technology.
A proprietary Playlist+ feature offers a workaround, allowing users to wirelessly record music or podcasts directly onto the headphones, functioning like a digital tape recorder. Sound quality is optimized for underwater listening and is enhanced when using the included earplugs, though the low-end can be pronounced.
With a 10-hour battery life, these headphones are a robust option for dedicated swimmers. Priced at $149.99, they represent a respectable value for their specialized features and durable construction, making them a standout choice for their intended purpose.




