The Longines Heritage Classic L28284730 Watch has a Historic Design with Contemporary Features The watches of the Longines Heritage Classic collection combine the original design of historical models with modern watchmaking technology. This Heritage Classic model features a 38.5mm wide steel case with a silver dial. The dial features black index markers and distinctive blue hands, as well as a small seconds dial at six o'clock. The steel grey case is combined with a black leather strap. The watch from the Longines Heritage collection has an automatic movement with a power reserve of 72 hours and a scratch-resistant sapphire crystal with an anti-reflective coating. Model number: L28284730 Case material: stainless steelCase color: steel grey Case diameter: 38.5 mm Watch thickness: 11 mm Strap material: leather Strap color: blackStrap width: 19 mm Watch weight: 69.4 g Sapphire glass, scratch-free Dial color: silver Water resistance: 30 meters (3 bar) Mechanism: automatic Availability: 72 hours