IWC - Portofino Hand-Wound Big Date Watch IW516101 Matt Black Maximum Load:

Maximum Load:

This circular slide rule provides for the solution of time

The Wayfarer silhouette here is split

37 mm 18K red gold case set with 66 diamonds

Pump: One 601  Rotary Brass Vane Pump

IWC - Portofino Hand-Wound Big Date Watch IW516101 Matt Black Maximum Load:45 mm 18K white gold case, 13 mm thick, transparent back, 18K white gold bezel, convex sapphire crystal with arched edge, antireflective coating on both sides, grey dial with rhodium plated hands and indices, calibre 59230 hand wound movement with small hacking seconds, large date window and power reserve display, approximately 8 days of power reserve, black alligator leather strap, pin buckle. Water resistant to 3 bar.