[lisper]

> need lubing and eventual replacement

Yes. Every couple of years. After being subjected to a lot of pressure cycling.

If you do nothing but take it into the shower or a swimming pool the o-rings will last longer than the batteries.

[msrenee]

Chlorine isn't friendly to o-rings, but I'm not sure where someone would put their phone while in a pool anyways. Mine comes in the tub with me for soaks for sure though.