A. Lange & Sohne’s Lange 1 Tourbillon Perpetual Calendar “Lumen” rightfully commands attention as one of the most ambitious and visually arresting releases of this year’s Watches and Wonders trade show.
But the more consequential release may be the quieter one: a watch that’s impeccably refined and fascinatingly complex, yet also remarkably easy to live with.
Watches and Wonders Geneva: Rolex, Grand Seiko and dozens of other heavy hitters gather in Switzerland every year to release their biggest watches. Catch up on all the new novelties.
Resized? More like rethought.

The previous Saxonia Annual Calendar, which at one point served as the only annual calendar Lange offered outside the 1815 family, was officially discontinued in 2018.
Now it’s back, and more versatile than ever.
The most immediately noticeable change with this revival is the case size. The previous-generation Saxonia Annual Calendar measured 38.5mm in diameter – the same as the Lange 1.
This new version trims that down to 36mm while maintaining a height of 9.8mm. It’s a move that follows the brand’s own playbook from Watches and Wonders 2025, where the 34mm 1815 three-handers drew widespread praise for their compact, confident proportions.








