IWIW381802-Ingenieur Perpetual Calendar Digital Date-Month


Ingenieur Perpetual Calendar Digital Date-Month Add to my wishlist

Price excluding taxes and including shipping.
Price excluding taxes and including shipping.

Titanium case, Automatic, self-winding, Diameter 45.0 mm.

Made in Schaffhausen, Switzerland.

Available to buy online. Orders can be returned within 30 days free of charge.

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IW381802 Specifications



  • Titanium case
  • Diameter 45.0 mm
  • Height 17.4 mm
  • Screw in crown
  • See-through sapphire glass back
  • Water resistance 12 bar



  • 89801 Calibre
  • IWC-manufactured movement
  • Automatic, self-winding
  • 68 hours Power Reserve
  • Frequency 28800.0 vph (4.0 hz)
  • 474 Components
  • 51 Jewels
  • Côtes de Genève, perlage



  • Perpetual calendar with large double-digit displays for date and month and leap year display
  • Chronograph function with hours, minutes and seconds
  • Hour and minute counters combined in a totalizer at 12 o’clock
  • Flyback function
  • Sapphire glass, convex, antireflective coating on both sides
  • Rotor in 18-carat 5N gold
  • Small hacking seconds
  • Limited to 100 pieces



  • Slate-coloured dial with luminescence



  • Black calfskin strap
  • Strap width 22 mm

The Ingenieur Perpetual Calendar Digital Date-Month Story

The Ingenieur Perpetual Calendar Digital Date-Month is the flagship of the Ingenieur family. The design, with its simple round case and the polished bezel, is inspired by the first generations of Ingenieur models from the 1950s and 1960s. This timepiece has a case measuring an imposing 45 millimetres made of titanium, and is limited to 100 individually numbered pieces. It has a slate-coloured dial and black hands with luminescence. The perpetual calendar displays the date and month in large digital displays on the dial, and is mechanically programmed to recognise the different lengths of the months and even adds a leap day at the end of February every four years. A chronograph with flyback function is an additional feature of the IWC-manufactured 89801-calibre movement. The rotor of the automatic winding system is made of solid 18-carat gold and can be seen through the transparent sapphire glass back.

Calibre Family 89000

The 89000-calibre family includes powerful chronograph movements with flyback function, which are used, for example, for the big digital date and month displays.

Perpetual calendar with digital date and month displays

The perpetual calendar with four display discs consists of 185 individual parts and shows the date and month with large digits in separate windows.

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