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  • Chronograph
  • Tourbillon
  • Calendar

Portugieser Tourbillon Rétrograde Chronograph

IWC 2020

ref. IW394006
Men's

The Portugieser, which traces its origins back to the 1930s, looks to naval deck watches for its highly legible dial. This new model combines a one-minute flying Tourbillon, a retrograde date display and a flyback chronograph measuring hours and minutes on a single totaliser at 12 o'clock. In the interests of precision, another quality inherited from marine timepieces, the hacking tourbillon means the movement can be stopped and the time set to the nearest second. Both the pallet lever and escape wheel of the in-house IWC 89900 calibre are treated with Diamond Shell® technology. This produces an extremely hard surface that reduces friction and improves the flow of energy in the movement. The platinum version shown here keeps precise time throughout its 68 hours of power reserve and comes as a limited edition of 50 pieces, as does the execution in 18k Armor Gold®.

Function

  • Function
    Hours, Minutes

Complications

  • Display
    Retrograde display
    Stop function via the crown
  • Elapsed time measurement
    Flyback chronograph
  • Calendars
    Simple calendar
  • Regulating mechanism
    Tourbillon

Movement

  • Movement name
    IWC 89900
  • Energy supply
    Self-winding
  • N° of components
    375
  • N° of jewels
    42
  • Power reserve
    68 hours
  • Vibrations
    28800
  • Form
    Round
  • Diameter
    mm

Case

  • Form
    Round
  • Material
    Platinum
  • Height/thickness
    16.00 mm
  • Diameter
    43.50 mm
  • Back
    Sapphire
  • Water-resistance
    30 m

Dial

  • Colour
    Silvered

Strap

  • Material
    Alligator
  • Colour
    Blue

Characteristics

  • Limited/numbered edition
    50