IWC Portugieser Tourbillon Mystere Retrograde Watch - 44.2 mm Red Gold Case - Ardoise Dial - Dark Brown Alligator Strap - IW504602 8999 has a Carbon 42 mm

has a Carbon 42 mm Case with Screw Down Crown and a Carbon

18K white gold gred in the form of Roman numerals

such as angular Snowflake hands and unprotected winding crown

accompanied by small seconds on the tourbillon carriage and off-centered hours and minutes indications

IWC Portugieser Tourbillon Mystere Retrograde Watch - 44.2 mm Red Gold Case - Ardoise Dial - Dark Brown Alligator Strap - IW504602 8999 has a Carbon 42 mm44. 2 mm 18K red gold case, 15. 3 mm thick, sapphire back, sapphire crystal with arched edge, antireflective coating on both sides, ardoise dial, caliber 51900 pellaton automatic winding movement with power reserve display, retrograde date display, flying minute tourbillon, approximately 7 day of power reserve, dark brown alligator leather strap by Santoni. Water resistant to 3 bar.