IWC Watch Portofino Hand Wound Eight Days. IW510103 For those that value precision, performance and prowess just as much as aesthetic beauty need look no further than this IWC Portofino Hand Wound Eight Days watch. Taking inspiration from the swinging sixties and the elegant Italian fishing town of the same name, the men’s IWC watch is presented with a neatly sized 45mm stainless steel case with polished finishing, convex sapphire crystal glass with anti-reflective coating and a brown alligator leather strap handcrafted by Italian shoe manufacturer Santoni. For optimal comfort and elegance, the strap is completed by a matching stainless steel pin buckle stamped with the iconic IWC emblem. Housed within the IWC Portofino Hand Wound watch is the 9210 Calibre manual winding movement which alongside an astonishing power reserve of 192 hours delivers 30 jewels and frequency of 28,800 vibrations per hour. The extended power reserve is put on display on the crisp silver-plated dial at 9 o’clock alongside a small seconds dial, a date aperture and rose gold feuille-shaped hands for hours and minutes. The Swiss made movement is also showcased through the exhibition case back where the Côtes de Genève and perlage decoration sits beneath more sapphire crystal glass. The IWC Portofino Hand Wound Eight Days watch under reference IW510103 is finished by water resistance rating of 30 metres.