A Cutting Edge Modern Classic - A Look At The Ingenieur Perpetual Calendar Digital Date-Month

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While perpetual calendars tend to be very traditional, conservative watches, IWC Schaffhausen has always believed in pushing the complication forward both technically and stylistically. This year with the launch of the new Ingenieur family, we bring you the Ingenieur Perpetual Calendar Digital Date-Month, a new take on what a perpetual calendar can be.

Performance Engineering

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You may remember the digital date-month display from last year’s Spitfire Perpetual Calendar Digital Date-Month, but with this Ingenieur we’ve decided to open things up and give you a look inside the amazing calendar mechanism. The subdials below the digital display discs are smoky semi-transparent sapphire that lets you watch the disks rotate as they change at midnight - it also allows the luminous numbers to charge-up before they’re needed.

Digital Date Display

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The dual-disc system for each display uses overlapping discs with a cutout to allow two digits to be displayed side-by-side. The result is a clean, easy-to-read system that hides its underlying complexity. Each time the date changes, a little energy is stored by the quick-action switch, so at the end of each month there is just the right amount to change is month. And, as you might expect at this point, a little energy is stored each time the month changes, so on December 31st all three displays (date, month, and leap year) can change simultaneously.

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To top this all off, there is the 12-hour chronograph, with the minutes and hours displayed on one register at 12 o’clock and a flyback mechanism. With this system, you read the elapsed time just like you typically read the time on a watch, making the chronograph a little more intuitive and easy to read on the fly.

While the interior of this Ingenieur is impressive, the exterior is equally exciting. The robust Ingenieur case is rendered in titanium aluminide and the pushers, crown, crown guards, and bezel screws are zirconium oxide, both alloys typically found in Formula One cars. All of this is held to the wrist with a black rubber strap with stitched leather inlays. The result is an extremely wearable, modern take on the classic perpetual calendar chronograph. The Ingenieur Perpetual Calendar Digital Date-Month is quintessential IWC.

Hodinkee for IWC Schaffhausen