Model Case Reference: 52508 Material: 18 kt Yellow Gold Finish: Polished Diameter: 39 mm Bezel Domed and fluted Winding Crown Domed Crystal Scratch-resistant sapphire Water Resistance Waterproof up to 50 metres / 165 feet Movement Type: Perpetual, mechanical, self-winding Calibre: 7140, Manufacture Rolex Precision: -2/+2 sec/day (after casing) Functions Centre ho... https://blueskyluxurywatches.com/product/1908-18-kt-yellow-gold-2/