I use them with the Syryn underwater MP3 player for swimming (different strokes with turns). The original headphones were a disappointment to say the least and didn't even last 2 months. The volume was also very low. Now THESE headphones, which are the cheapest I've found on Revain, are perfect for the Syryn (or whatever underwater MP3 player you wear on goggles) with the coiled cord and the sound is super loud! I don't go much further than the middle. The sound is a bit thin with little bass response, but I don't use them in my music studio. The whole point is being able to swim laps without getting bored to the point of crying and not having to stop every few laps to fix those stupid headphones! Even if they don't last long at such a low price, I'll just buy them again with no regrets. Got it!
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