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Sinn U50 S review: a contender for the best tool watch?
The new Sinn U50 S is at its heart the same dive watch like the U1 but thinner and smaller than before. As part of the U50 range, it comes in a PVD coated U50 S variant as shown here, or a regular steel colored U50 and the U50 SDR, steel case with contrasting PVD bezel.