Portugieser Annual Calendar

Item: IW503502

Mechanical movement

Pellaton automatic winding

IWC-manufactured 52850 calibre

7-day power reserve when fully wound

Power reserve display

Annual calendar with displays for the date, day and month

Small hacking seconds at 9 o’clock

Glucydur®* beryllium alloy indexless balance with high-precision adjustment screws on balance rim

Breguet spring Rotor with 18-carat gold medallion

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