Engine: Patek Caliber 240 HU (33 Jewels, 239 parts, 21,600vph) Functions: Hours, Minutes, Small Seconds, World Time Crystal: Sapphire - Anti Reflective Caseback: Sapphire Crystal Display Back Water Resistance: 30m / 100ft (unsuitable for prolonged contact with water e.g. swimming, bathing) Bracelet: Leather - Blue Crocodile Bracelet Width: 14.0 - 20.0 mm Clasp: Platinum deployant fold-over clasp Crown Material: Platinum, Fluted Bezel Function: Fixed Bezel Material: Platinum