Hello all, I just received my Riseman GS9200 MBJ-1 and I have a question about using it on the beach. More specifically, I do a lot of workouts in the sand and I'm curious if I end up getting sand and dirt in the sensors will this cause problems with the sensors? Or will I be able to rinse the dirt out of the sensors and everything operate normal? Normally I wouldn't be concerned because it's a G-Shock, but this is the first watch I've had that has the temp sensor and I'm not sure if I have to be a little more careful with this model or not. I know I could get a different watch for when I work out but I really like the fact that this watch shows the time while using the stopwatch. Thanks for any and all the help you can provide.