IWC Portofino Hand-Wound Tourbillon Retrograde Watch - 45.0 mm 5N Gold Case - Silver Dial - Dark Brown Alligator Strap - IW516501 IW327012 with its silver-tone luster

with its silver-tone luster

tantalum bezel

circular grained in 18K pink gold crown set with a sapphire

blue inner bezel

IWC Portofino Hand-Wound Tourbillon Retrograde Watch - 45.0 mm 5N Gold Case - Silver Dial - Dark Brown Alligator Strap - IW516501 IW327012 with its silver-tone luster45. 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.