IWC Portofino Hand-Wound Tourbillon Retrograde Watch - 45.0 mm 5N Gold Case - Silver Dial - Dark Brown Alligator Strap - IW516501

45.0 mm 18K 5N gold case, 14.1 mm thick, see-through sapphire glass back, arched-edge sapphire glass crystal with antireflective coating on both sides, silver-plated dial, calibre 59900 movement with date, hours, minutes, power reserve indicator, tourbillon escapement, approximately 192 hours of power reserve, dark brown alligator leather strap by santoni. Water resistant to 3 bar.