I don't no if you read the issue I was having I could not get it to work. I also no about waterproof gaskets and how they work.it just wouldn't turn on so I open it up to get the battery lined up so it would come on ,then when I put the cover on it would shut off.it is not my first pp ,Garrett has the same problem with the foam on there's to.seems to me they should make a plug that snaps on the battery like the cheap ones that never have battery issue.all the same I used it today and it was find and now I love the thing.I must say I never used a pulse pinpointed ,maybe it had to reset it self all the same did not mean to vent but it is not all that cheap so if you pay forty dollars ,you get what you pay for.pay a 100 you should get something decent .so pardon my frustration ,but I'm a real person and this is a REAL review.so again I love the thing and would recommend it .