One of the inherent dangers when it comes to mountain climbing is the possibility that you may be caught on the slopes after the sun goes down, stuck and in trouble. The Closed Watch by Seon-Il Kim, Mingyeoung Baek, Hyun-Ju Park, and Mi-Jang solves this problem by allowing you to set the season so an intuitive digital curtain begins to circle around the watch face as the sun descends. When the curtain gets close to covering the face its nearly time to be off the mountain and on to safety.
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