TL;DR

Ever wondered how to jam underwater? We teamed up with Renzo from Synchrosound to test custom hydroacoustic speakers, bone-conduction Shokz OpenSwim Pros, and a budget Monster S620 Bluetooth speaker in a pool. Along the way, we break down why water messes with high frequencies and why regular headphones drown out.

Spoiler: professional underwater transducers bring the most fidelity, bone-conduction headphones deliver surprisingly clear tunes by bypassing water’s acoustic hurdles, and cheap Bluetooth options… well, they get you by, but don’t expect audiophile quality. Perfect for lap swimmers and splashy workouts!

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