IWC Portugieser Perpetual Calender Double Moon
collections / IWC Schaffhausen

IWC Portugieser Perpetual Calender Double Moon


REFERENCE: IW503401
CASE MATERIAL: 18-carat white gold
BRACELET/STRAP: black alligator leather strap
DIAL COLOUR: midnight blue
JEWELS: 54
CALIBRE: 52615
Mechanical movement
Pellaton automatic winding
IWC-manufactured 52615 calibre (52000-calibre family)
7-day power reserve when fully wound
Power reserve display
Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase for the northern and southern hemispheres
Small hacking seconds
Glucydur®* beryllium alloy indexless balance with high-precision adjustment screws on balance rim
Breguet spring
Rotor in 18-carat red gold
Sapphire glass, arched-edge, antireflective coating on both sides
See-through sapphire-glass back
Water-resistant 3 bar
Case height 15.3 mm
Diameter 44.2 mm
Alligator leather strap by Santoni