The Windshear(or Aquaseal) is a thin layer. The charger flexes over the extra thickness.As long as you don't slather it in there you'll be fine. I wore 1 (Foretrex not forerunner)for the entire Tybee and after losing our 76s the foretrex was our main navigation tool(not that it's hard to keep land on your left,but...) There's a couple of sellers that sell the refurbed ones on E-bay. I had one lock up ,but after the battery ran down it re-set itself and seems to be fine.
Todd


"I said, now, I said ,pay attention boy!"

The cure for anything is salt water - sweat, tears, or the sea
Isak Dinesen
If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most.
E. B. White