The question isn't complete. You didn't mention which watch. There are watches that wind both directions because they have separate mainsprings - one for a complication and one for the time keeping. For instance some Audemars Piguet Grand Sonneries winds clockwise for the time keeping movement and winds Counter clockwise to power the Grand Sonnerie portion. Okay, you might say, that's a super rare watch - and that you meant more normal watches... Let's give a mass produced example; a $10,000 USD normal watch. Zenith has a chronograph watch that winds clockwise for the time keeping mechanism, and has a separate mainspring for a special chronograph version.