The IWC Big Pilot's Watch 43 (IW329301) features a 43mm stainless steel case with the iconic onion-shaped screw-down crown. Powered by the in-house Caliber 82100 automatic movement with Pellaton winding system and 60-hour power reserve. The black dial features large Arabic numerals with Super-LumiNova luminescence for optimal legibility. Includes sapphire crystal front and display back, paired with brown calfskin leather strap with EasX-CHANGE quick-release system.