The Longines Avigation Collection Bigeye watch featuring a 41mm round titanium case with scratch-resistant sapphire crystal, with several layers of anti-reflective coating on the underside. Blue (also called Petroleum) dial with painted Arabic numerals and black hands. Brown leather strap with buckle. Self-winding mechanical movement beating at 28'800 vibrations per hour, with a power reserve of approximately 66 hours. Water-resistant to 3 bar.