Frederique Constant - Highlife COSC Certified 2.3813.SE-X4 Water resistance to 200 meters

Water resistance to 200 meters

and water resistance to 30 meters

Band: Two-Tone Stainless Steel Bracelet

Due to the hand-made nature of these products

Fold Over Clasp with Push Button Case Size 30mm Case Material Silver-Tone Stainless Steel Crystal Mineral Crystal Water Resistance WR

Frederique Constant - Highlife COSC Certified 2.3813.SE-X4 Water resistance to 200 metersRarely 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 organisation that only issues its chronometer certificates to these pieces