Dont work - Nautica Watches

This is pretty general but here is what you can do...

Check the battery. If the battery is bad then replace it.
If the battery is good have a watch technician check to see that the current is good. If the current is bad then check contacts for corrosion. If still bad have the movement replaced. If there is a signal then a cyclonic can be used to force the movement and free up the gear train. If this still doesnt make the watch work then replace the movement.

This is a very general answer for a general problem.