An authentic Omega men's wristwatch of the Constellation Globemaster collection. Features an automatic chronometer movement, Calibre 8922 engine providing 55 hours power reserve. Comes with a brushed and polished stainless steel case combined with a green alligator leather strap and folding clasp. The sun-brushed green dial includes luminous white gold hands and stick hour markers; it also displays the date at 6 o'clock and features an annual calendar around the outer rim. Includes central observatory medallion set in sapphire crystal alongside various sub-dials displaying functions including second, minute, hour, date display (also indicated on the main chronograph dials), power reserve indicator, and a fixed tungsten carbide bezel. Rated at 100 meters / 330 feet water resistance.