I swam with my Samsung gear sport in salt water.

I swam with my Samsung gear sport in salt water. I swam with my Samsung gear sport in salt water. It was workin g fine in the water, I rinsed it out when I got home and it was fine. I charged it over night and went to put it on this morning and it hasnt charged and now the dock just flashes red when I try and charge it. The watch itself is dead and wont turn on.