Case material: Rose gold; Charge: Automatic; Conditions: Never worn Presentation condition : With dealer guarantee ; Model: Portuguese Price on request Gmtbroker Reference: IW504402 44.2 mm 18K red gold case, sapphire-glass back, silver-plated dial, pellaton automatic winding calibre 51900 movement with power reserve display, retrograde date display, flying minute tourbillon, Glucydur beryllium alloy balance with high-precision adjustment cam on balance arms, Breguet spring, rotor with 18-carat gold medallion, approximately 7 days of power reserve, brown alligator leather strap. Water resistant to 3 bar. This mysterious timepiece revolves around its own axis once a minute and appears to hang suspended in mid-air. The stunning flying minute tourbillon consists of 82 individual parts and weighs just 0.635 grams. It features a retrograde date and power reserve display, and has the largest IWC-manufactured automatic wristwatch movement, with 7 day power reserve. Also known as: IWC IW504402, IWC IW-504402, IWC IW 504402