Ingenieur Perpetual Calendar 41

THE IWC SCHAFFHAUSEN INGENIEUR PERPETUAL CALENDAR 41 CR AFTED WITH A LIGHT WEIGHT TITANIUM CASE AND BR ACELET

IWC Schaffhausen presents the Ingenieur Perpetual Calendar 41 in titanium at Watches and Wonders Geneva. Featuring a 41-millimetre case and an integrated bracelet crafted from grade 5 titanium, it marks the Swiss luxury watch manufacturer’s lightest perpetual calendar watch. The case, bezel and bracelet links showcase a combination of sandblasting, polishing and satin-finishing. Boasting the characteristic “Grid” structure, the matte grey dial blends harmoniously with the titanium case and bracelet, lending the watch a striking monolithic look. The IWC-manufactured 82600 calibre, featuring a Pellaton winding system reinforced with ceramic components, can be viewed through the sapphire glass case back.

Titanium is characterised by its low weight, high strength and excellent corrosion resistance. Its matte grey colour also makes it an attractive material for use in wristwatches. Over more than four decades, IWC Schaffhausen has acquired comprehensive expertise in machining and finishing this metal. With the introduction of the Gérald Genta-inspired Ingenieur in 2023, the Swiss luxury watch manufacturer also presented an automatic model with a case and bracelet crafted from grade 5 titanium. This year, IWC launches a new model that blends this signature case material with a complication equally emblematic of the brand: the crown-controlled perpetual calendar from Kurt Klaus.

The Ingenieur Perpetual Calendar 41 (Ref. IW344904) combines the Gérald Genta-derived integrated bracelet design with an execution in titanium for the first time. It features a grade 5 titanium case measuring 41 millimetres in diameter and an integrated titanium bracelet. The bracelet is attached to the case via its middle links, offering excellent ergonomics. As titanium is about 45 percent lighter than steel, the watch feels very comfortable on the wrist. The characteristic round bezel, a hallmark feature of the Ingenieur, is secured to the case ring with five functional screws. This titanium

watch is further distinguished by its high-end finishing. The case, bezel, crown protection, and bracelet links are sandblasted, with their edges lightly polished, while the crown is sandblasted. A satin finish on the sides of the case and the bracelet accentuates the intricate lines and angles of the Gérald Genta-inspired Ingenieur design.

ELABORATELY FINISHED DIAL COMPLEMENTS THE TITANIUM LOOK

The matte grey dial blends harmoniously with the titanium case and bracelet. Having the same colour as the metal, it lends the watch a strikingly monolithic look, almost as if it had been carved out of a solid block of titanium. The dial features the characteristic “Grid” structure, consisting of small lines and squares, adding depth and texture to it. The subdials displaying the calendar information are treated with a circular satin finish and feature a refined azurage on their edges. In the subdial at 6 o’clock, the single moon disc boasts a detailed azurage background. Both the applied metal markers and the hands are filled with Super-LumiNova®, ensuring excellent legibility.

THE PERPETUAL CALENDAR OFFERS A HIGH DEGREE OF AUTONOMY

Developed in the early 1980s by IWC’s former head watchmaker, Kurt Klaus, the perpetual calendar is mechanically programmed to account for many of the Gregorian calendar’s irregularities. It will automatically recognize the different lengths of the months and also insert a leap day every four years at the end of February. The date is displayed in the subdial at 3 o’clock, the month at 6 o’clock, while the day of the week is shown at the 9 o’clock position. The moon phase has been integrated into the subdial at 6 o’clock. Thanks to a special reduction gear train, it will only deviate from the moon’s actual orbit by one day after 577.5 years. The counter at 9 o’clock also features a small leap-year indicator that counts down the years to the next leap year.

A MECHANICAL POWER HOUSE WITH CERAMIC COMPONENTS

Inside the titanium case, the IWC-manufactured 82600 calibre is at work. This high-end automatic movement features a Pellaton winding system, which uses movements of the oscillating mass in both directions to wind the watch. The mainspring stores a power reserve of 60 hours. Components of the movement that are subject to high stress are crafted from zirconium oxide ceramic. Ceramic is, like titanium, a signature IWC material. It is hard and virtually wear-free, making it a suitable choice for the automatic wheel and the clicks. The balance wheel oscillates at 28,800 vibrations per hour (4 Hz), ensuring accurate timekeeping. Visible through the sapphire glass case back, the movement is decorated with Geneva stripes, circular graining and blued screws.