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$300,000 Watch Doesn't Tell Time, But Shows if the Sun is Up

How many times have you sat and pondered whether or not it was daylight outside? Unless you spend the better part of your days living underground, chances are that you don't think about this very often. Sure, when you're sitting in a cubicle after hours it may cross your mind, but is that enough to justify a watch that solely tells you whether the sun is up or down?

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