This is an authentic ladies quartz wrist watch by Chopard from the Happy Diamond Collection. The double round shape watch has a double side glass case between the larger frame and smaller round watch on the inside with 5 round cut bezel set floating diamonds, the watch and case frame has diamond bezel. Sapphire crystal and the short bar lugs on each side has 4 each round diamonds. The 4 strands byzantine link chain are attached to the lugs and hook in snap shut clasp. This beautiful luxury watch is signed by the designer with the gold content.Back of case: Happy Diamonds 20/4012 237601 4066Diamond: 1.00 total carat weight Color: F Clarity; VS1Measurement: 6.5" long x 0.35" wide x 0.10" highCase: 0.90" round x 0.20" thickMaterial: 18k yellow goldWeight: 28.3 grams