Authentic IWC Big Pilot's Spitfire watch model IW510506. Features a manual winding mechanical movement, Calibre 59235 with a 192-hour power reserve. Equipped with date function and sub-dials displaying seconds. Case is made of brushed bronze material. The green dial features luminous bronze tone hour markers, Arabic numeral hour markers including minute markers on the outer rim, and displays the time in hours, minutes and seconds. Includes a solid case back and scratch resistant sapphire crystal. Powered by an IWC Calibre 59235 engine. Comes with screw down crown and tang clasp. Has water resistance up to 60 meters (approximately 200 feet) and includes a standard manufacturer's warranty. The watch has a unique case shape.