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IWC stainless-steel automatic watch. Case material: 100% stainless steel with synthetic sapphire crystal back case. Strap material: 100% calf skin. Crown: 100% stainless steel, screwed in. Style Number: IW503605. Movement type: automatic, self-winding, IWC-manufactured movement. Power reserve: 168 hours. Frequency: 28800 Vph (4 Hz). Dial: blue. Glass: sapphire crystal convex, antireflective coating on both sides. Jewels: 54. Calibre: 52616. Technical details: small hacking seconds, glass secured against displacement by drop in air pressure, rotor with 18-carat gold medallion, power reserve display, 7 days power reserve, perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase for the northern and southern hemisphere. Case height: 15.4mm. Case diameter: 46.2mm. Water resistance: water-resistant to 6 bar. Made in: Switzerland. Warranty: 2 years. Care: please refer to the brand's instruction. Verified details include material of stainless steel, metal of 18-carat gold and stone of Sapphire. Available colours: GOLD.