An interesting concept of smart watches was proposed by a group of enthusiastic developers. In the presented working prototype, called Doppio, not one, but two touch displays at once, and one of them is a separate independent unit. When paired, dual screens can display much more information on a smart watch. The second unit operates wirelessly and is attached to the main one using a special magnet on either side or from above, which so far looks bulky. In their demo, the developers have already proposed several options for displaying content, but in the future they intend to create even more interesting variations for displaying all kinds of applications and games. What is more interesting, an additional unit does not always need to be worn with a smart watch – you can put it aside or leave it at home until you need the extended double screen again. Currently, Doppio remains only a concept, whether they decided to implement it in the final product is unknown.