IWC - Portuguese Perpetual Calendar - Platinum Watch IW502305

44.2 mm platinum case, sapphire-glass back, silver-plated dial, pellaton automatic winding calibre 51613 movement with power reserve display, perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase, small hacking seconds, Glucydur®* beryllium alloy balance with high-precision adjustment cam on balance arms, Breguet spring, rotor with 18-carat yellow gold medallion, approximately 7 days of power reserve, black alligator leather strap. Water resistant to 3 bar.