is this water[proof if submerged?
For brief periods to shallow depths yes it is waterproof. Not sure if you could use it for a dive though. My wife used it to keep her tablet dry when in the pool. Worked great when she dropped in it the 6 foot end.
Hope this helps.
It is water proof but I wouldn't take below 10 feet
I have never submerged it but it has been soaked with water during dive trips and everything was dry