4 mm stainless steel and yellow gold case
caliber 8923 self-winding Co-Axial master chronometer movement with date and annual calendar functions
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black dial with laser-engraved waves and a date window at 6 oclock
IWC Portugieser Perpetual Calendar Watch - 44.2 mm 5N Gold Case - Slate Dial - Black Alligator Strap - IW503404 2025 4 mm stainless steel and44. 2 mm 18K 5N gold case, 14. 9 mm thick, see through sapphire glass back, arched edge sapphire glass crystal with antireflective coating on both sides, slate coloured dial, calibre 52615 automatic movement with date, day, month, perpetual calendar, year indicator, hours, minutes, small seconds, moonphase, power reserve indicator, approximately 168 hours of power reserve, black alligator leather strap by santoni. Water resistant to 3 bar.