November 6, 2025
Just when you thought you’d seen it all in the watch world, Chicago-based Haim drops the Annum. Here are four insane details you probably missed about their new complete calendar watch.
1. The “Floating” Rotor Illusion
Flip the Haim Annum over and you’ll see what looks like a magic trick. Instead of a standard rotor blocking the view, Haim uses a gold-plated tungsten weight attached to a completely transparent disc. This creates a stunning illusion of a peripheral or “floating” rotor, giving you an unobstructed view of the custom movement’s Geneva stripes and blued screws. It’s a design flex you rarely see outside of high-end luxury brands.
2. The Fumée Dial is Literally See-Through
While the Dark Cobalt and Stone White dials are gorgeous, the Fumée version is on another level. It’s not just a smoky color effect; the dial is made from transparent smoked PVC glass. This unique material allows you to peek through the front of the watch and see the custom complete calendar module working its magic underneath. It’s an enthusiast’s dream, blending sophisticated aesthetics with mechanical transparency.
3. It Has Vintage “Cow Horn” Lugs
Notice the unique shape where the strap meets the case? Those aren’t your standard lugs. The Annum features a modern take on the classic “Cornes de Vache” (French for cow horns) lug style. This vintage-inspired detail gives the 38mm case a distinctive and elegant silhouette that helps it stand out from the crowd and adds a touch of mid-century design flair.
4. A Custom Engine Under the Hood
Most microbrands use off-the-shelf movements, but Haim went a step further. While the Annum’s Caliber HWC-2 starts with the reliable Miyota 9000 series architecture, Haim developed its own custom module to add the complete calendar and moonphase complications. This level of customization is a massive achievement for a smaller brand and is the reason this watch is so special.
The Haim Annum is packed with thoughtful details that reward a closer look. It’s a true conversation starter and proves that microbrands are seriously leveling up the watch game.
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