Every H2O Audio product is tested in a pressure chamber before it is packaged to ensure everything that leaves our factory is 100% waterproof. Our strict engineering standards give us the confidence to back our product with an unprecedented iPod/iPhone/Mp3 Player Replacement Warranty. If your iPod, iPhone, or any other mp3 player is damaged due to a defect in workmanship or manufacturing error in an H2O Audio product, we’ll replace it. Please see warranty for details.