Frederique Constant - Highlife 39mm - COSC Certified 98P184 The uni-directional bezel is also

The uni-directional bezel is also a useful tool for divers to time decompression stops during ascents at the end of a dive

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Metal Bracelet

Fold Over Clasp with Push Button Case Size 40mm Case Material Black Stainless Steel Black Ion Plating Crystal Mineral Crystal Water Resistance WR

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Frederique Constant - Highlife 39mm - COSC Certified 98P184 The uni-directional bezel is alsoRarely are watches certified by the COSC (Official Swiss Chronometer Testing Institute). This certificate is only issued to pieces that can guarantee perfect isochronism over a given time and at given positions in effect, their ability to tell the time correctly, consistently and precisely, within the strict limits enforced by an ISO standard. The COSC is an independent Swiss organization that only issues its chronometer certificates to these pieces