IWIW504601-Portugieser Tourbillon Mystère Rétrograde


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  • Platinum case
  • Automatic, self-winding
  • Black alligator leather strap by Santoni
  • Diameter 44.2 mm

You may return your purchase to the Client Relations Center within fourteen (14) days of receipt for exchange or a refund to the original credit card.

IWC will accept products returned to us within fourteen (14) days of the date of the delivery, in its original packaging in a new and unused state, with all materials and documents included and in accordance with the Conditions of Sale.

Personalized IWC products (engraved or otherwise) cannot be returned to IWC for exchange or refund. All returns will be subject to strict Quality Control (QC) by IWC to ensure that the returned products satisfy these requirements. If the products do not meet QC standards, IWC will refuse the return, and the products will be sent back to the Customer or the Gift Recipient, as applicable. If the returned product satisfies Quality Control (QC), IWC will proceed with the applicable refund or exchange.

This watch is available in different materials and colours

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IW504601 Specifications



  • Platinum case
  • Diameter 44.2 mm
  • Height 14.9 mm
  • See-through sapphire glass back
  • Water resistance 3 bar



  • 51900 Calibre
  • IWC-manufactured movement
  • Automatic, self-winding
  • 168 hours Power Reserve
  • Frequency 19800.0 vph (2.75 hz)
  • 44 Jewels
  • Côtes de Genève, perlage



  • Flying minute tourbillon
  • 7 days power reserve
  • Retrograde date display
  • Power reserve display
  • Sapphire glass, arched-edge, antireflective coating on both sides
  • Pellaton automatic winding



  • Silver-plated dial



  • Black alligator leather strap by Santoni
  • Strap width 22 mm

The Portugieser Tourbillon Mystère Rétrograde Story

After the 31st day of the month, the retrograde date display of the Portugieser Tourbillon Mystère Rétrograde automatically jumps back to the 1st; in shorter months, the hand can be directly advanced using a rapid-advance system until it reverts to the 1st. The 7-day power reserve display indicates how much energy remains in the IWC-manufactured 51900 calibre. For watch lovers, one of the most fascinating aspects of this model is the unusual presentation of the flying tourbillon, consisting of 82 parts, as a “12” that appears to come to life. The tourbillon rotates around its own axis once every 60 seconds to counteract the pull of gravity on any disequilibrium in the balance wheel that would adversely affect the watch’s rate and accuracy. The IWC-manufactured movement with its intricately decorated nickel-silver three-quarter bridge can be admired through the transparent sapphire-glass back. The Portugieser Tourbillon Mystère Rétrograde in platinum with a silver-plated dial comes with a black alligator leather strap from the House of Santoni.

Calibre Family 50000

It needs winding only once a week: the 50000-calibre family features the efficient Pellaton pawl-winding system with a 7-day power reserve and a Breguet spring for maximum precision.

Retrograde date display

This analogue type of display with a hand and scale gives the wearer a very special feel for the passing of time. At the end of the month, the spring is no longer under tension and the date hand jumps back to the start of the month.

Tourbillon Mystère

Watch lovers are particularly fascinated by the unusual arrangement of the “flying” tourbillon, consisting of 82 parts, against a deep black background, creating the illusion that the filigree cage containing the balance is rotating in mid-air.

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