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Superlative Chronometer, Officially Certified
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10 March 2010, 04:38 PM
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wuzzzer
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Join Date: Apr 2008
Location: USA
Posts: 384
Rolex has stated that their use of "Superlative Chronometer" refers to their watches being regulated in-house to +5/-1 seconds per day - tighter tolerances than the COSC standard.
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