I learned from a professional underwater photographer many years ago to rinse all dive/photo equipment by adding baking powder to the water - I followed his advice after every dive for many years and never had any problems with any of my gear. The process required a container large enough to place the equipment - I used a large rubber trash can- filled with fresh water, adding a couple of teaspoons of baking soda powder. You would then work all the controls of your equipment -e.g. the focus, shutter and apperture knobs, etc. while keeping the gear in the container filled with the fresh water mix. I always included my dive watch in this drill and again, never had any problems. So next time you forget to rinse the watch after a swim in salt water and the bezel gets stuck, you could try the fresh water and baking soda power mix.
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