Comment Comment by mitthrowaway2 The waterproof 3.5mm jack connector isn't an R&D cost, it's just a standard component you can buy from Digikey; comes with an o-ring. A whole generation of waterproof phones had them, like the Sony Xperia.They look like this: https://www.digikey.com/en/products/detail/cui-devices/SJ-35... parent mitthrowaway2 2 years ago
They look like this: https://www.digikey.com/en/products/detail/cui-devices/SJ-35...