Longines Heratige Classic Collection Gents Automatic Silver Arrow Watch With A Brown Leather Strap, Grey Stainless Steel Case & Silver Coloured Dial. Some of the special features of this watch include scratch-resistant sapphire crystal, with several layers of anti-reflective coating on the underside, screw-down case back, silver polished hands & Self-winding mechanical movement beating at 25'200 vibrations per hour, with a power reserve of approximately 72 hours. Whenever aesthetic or technical, the innovations of Longines have elevated the brand's winged hourglass into a veritable emblem of know-how and elegance. Longines combines the original aesthetics of its most remarkable historic models with the most modern watchmaking techniques. Heritage Classic pieces are a tribute to the innovative spirit that has driven Longines’ watchmakers from the outset. Longines timepieces draw from this expertise and illustrate the durability that is the brand’s signature, as well a consistent desire to honor history. Claso: Buckle Swiss Super-LumiNova