I have a Garmin 76 which I use as a personal and back up GPS. I normally carry it in the leg pocket of the Ravenspring.
Very pleased with my 76 !! But !!
Last year, while running a Military Sea Survival Ex I was floating round for about an hour in the dark and briney waiting for a search team to find me.
The brand new 76 on its first active outing was in my leg pocket.
When checking and packing away my kit later, I went to remove the batteries from the Garmin 76 to discover the battery compartment full of water !
In fairness, Garmin through their vendor sent me a spanking new unit a week later without any quibble.
I am absolutely sure that it was sealed correctly by myself prior to use.
I haven't had to jump in since receiving the new one ( Promotion means that I now have chaps to do that for me !!!
) so fingers crossed.
Not even sure what the moral of this story is myself?
Test your Garmin in the water before you have to rely on it in anger........... is probably the cautious if slightly harsh verdict on a normally excellent product and company.