Like the secret agent momentarily changing his identity in spy's story, the watch could also act multiple identities. Such a watch is called as the changeable gentleman among watches, and is the favorite of many watch lovers. It sometimes plays the role of a solemn commercial watch arranging with the grave business suit, sometimes plays the role of a dress watch harmoniously matching with the beautiful fashionable dress, and sometimes plays the role of an underwater watch accompanying with diver to explore the sea. Many Tudor watches are such changeable gentleman, for example, the Tudor Hydro1200 watch. It could perfectly collocate with different style of clothing, and plays the different role in different occasion.