A ‘cheat sheet’ version of H. Moser & Cie.'s groundbreaking perpetual calendar complication.

When H. Moser & Cie. unveiled its minimalistic perpetual calendar watch in 2005, the brand probably thought that it couldn’t have made a simpler and less superfluous version of the complication.

And it was right, too. A watch that can mechanically calculate, display AND adjust the entire suite of calendar indications – including date, month, and leap year – was never going to be anything less than complex. However, the introduction of H. Moser’s Perpetual Calendar changed all that – at least from the user’s perspective. Unlike perpetual calendars of yore that struggled with cluttered dial displays and frightened their owners with pitfalls of hidden pushers and too-fragile adjustments to get these watches up to speed, the H. Moser’s Perpetual Calendar looked like a three-hand watch. It also allowed one to set the time and date at any time of the day bi-directionally just from the crown without fear of damaging the movement.

Despite its best intentions, the brand’s flagship timepiece can also prove to be too simple for some. Although it offers all the pertinent calendar information at a single glance, the watch, which features a tiny central indictor for the month, leap year disc on the back, and jumping date display that automatically calculates the differences between 28, 20 and 31-day months, can befuddle some.

To negate the challenge, H. Moser has rolled out the cheekily named Endeavour Perpetual Calendar Tutorial. Clad in 42mm white gold, this new addition to the brand’s expansive collection of perpetual calendar iterations comes with a ‘Funky Blue’ fumé dial inscribed with markings and instructions for the watch’s aforementioned various displays and features.

The execution is fun, for sure, and entirely in line with H. Moser’s penchant for making watches that are mischievous yet luxurious and technically accomplished. At the same time, the Endeavour Perpetual Calendar Tutorial ‘cheat sheet’ design really does offer a practical guide to how the watch ought to be used. An aesthetic and conceptual win in our books. Limited to 20 pieces.

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