26.00 mm 18k white gold case with diamonds, crown set with 1 diamond briolette, mother-of-pearl dial, l'heure du diamant round small, 26.00 mm diameter. 18k white gold case and diamond-set 18k white gold pin buckle. prong-setting with 22 diamonds = 2.20 cts. crown: 1 diamond briolette = 0.03 ct. dial: mother-of-pearl dial. hand-wound mechanical movement, approximately 30 hours of power reserve.