Authentic IWC Big Pilot Chronograph perpetual calendar men's watch model IW503008. Features ceramic case with white rubber strap and folding clasp; fixed bezel. Dial includes luminous black hour and minute hands along with Arabic numeral markers, minute markers on the outer rim, and four sub-dials set against a black background. Powered by Swiss automatic movement: IWC Calibre 52615 engine. Includes perpetual calendar function displaying day of week, month, moon phase, power reserve, date; chronograph functions showing seconds, minutes, hours, day, month, and moon phase via respective sub-dials. Equipped with scratch-resistant sapphire crystal lens and round case shape measuring 46.5mm in diameter and 15.5mm thick. Water resistant to 60 meters (200 feet). Comes with a 2-year WatchMaxx warranty.