IWC Big Pilot’s Watch IW500912. 46mm stainless steel case. Black dial with power reserve indicator at 3 o’clock, date sub-dial at 6 o’clock. IWC Automatic, automatic 51111 caliber, which contains 42 jewels, 311 parts, 7 days power reserve (168 hours). Black Santoni calfskin leather with deployment buckle.