IWC Big Pilot, aka “Slow-Beat”, Ref. IW500201, movement no. 2928924, case no. 2958498, sold in 2005 A fine, water-resistant, large, tonneau-shaped, stainless steel, automatic, 7-days power reserve pilot’s wristwatch with black dial, luminous lozenge hands, sweep center second, power reserve indication, leather strap and stainless steel IWC deployant clasp. Fitted with a caliber C.50110, rhodium-plated, self-winding. 44 jewels, patented Pellaton winding system, dust cap, screwed steel case back, large “fish” winding crown. Dial, case and movement signed. Diam. 46 mm. Thickness 16 mm. Accompanied by a fitted presentation box, user manual, guarantee card dated February 2005, IWC guarantee booklet, soft cloth. The present watch is a sought-after first edition of the iconic Big Pilot model, sometimes called "Slow-Beat" because of its 2.5 Hz movement. The five-beats-per-second rhythm allows the beat to be seen in a way that many modern mechanical watches (which typically beat 8 times per second) do not.