The Aftershokz Xtrainerz, launched at CES 2019, are headphones designed to help you enjoy swimming that little bit more.

Not through making the act of splashing around any more palatable, but more to do with the fact that you can now be entertained with podcasts or music while you’re remembering how to not breathe underwater.
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https://www.techradar.com/reviews/aftershokz-xtrainerz-review