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Moritz Grossmann Hamatic Watch

Moritz Grossmann Hamatic Watch Watch Releases

German watchmaker Moritz Grossmann has released a dress watch that uses some seriously interesting mechanics. The Moritz Grossmann Hamatic is a follow-up to last year’s Atum Hamatic release that marked the first time Moritz Grossmann had released an automatic watch. The Atum Hamatic was very similar but featured an open-dial, which displayed the novel winding system. The watch features a a self-winding “hammer system” in-lieu of a traditional rotor which presented its own unique set of challenges.

Moritz Grossmann Hamatic Watch Watch Releases

Case & Dial

Measuring in at 41mm x 11.35mm, the watch is on the slightly larger side for a traditional dress watch. The case is available in either white gold (ref. MG-002303) or red gold (ref. MG-002302) with extended lugs. The dial is a slab of silver and utilizes conservative design cues based on pocket watches of old. Traditional roman numeral indicators, and a recessed small second sub dial are the only indications.

The handset is my favorite part of the dial. Featuring an ultra-thin (1/10th of a millimeter at their thinnest points) handset, the hour-hand features a pear-shaped head, while the minute hand utilizes a spear shape. Both are heat-treated to achieve that “brown-violet” color distinctive to Moritz Grossmann. Overall, the dial feels like a streamlined pocket watch, and I’m totally in favor of it. The watch is water resistant up to 30m, and comes on either a black or brown alligator leather strap.

Moritz Grossmann Hamatic Watch Watch Releases

Moritz Grossmann Calibre 106.1

Flipping the watch over is where the real fun begins. Visible through a sapphire caseback is the Moritz Grossmann Calibre 106.1. This movement is specifically designed for the Hamatic. Being the first automatic movement the brand has produced (they’re known for their hand wound movements), the construction of the movement is unique in that it draws influence from some of the oldest automatics. The first thing you’ll notice is the huge oval shaped hammer.

Moritz Grossmann Hamatic Watch Watch Releases

The general concept here is that the hammer, which spans just about the entire width of the movement, can be torqued by even the slightest movements. Because the weight at the end of the hammer is solid gold, and far from it’s base, it swings back and forth like a pendulum. Differential gearing means the movement of the hammer can wind the spring no matter which direction it swings. Now, because of the nature of an automatic hammer winding system’s design in general, shock and dramatic movements can throw off the wind. So, Moritz Grossmann added two buffers to the end of the oscillator to accommodate those high excursion shocks to the weight. Getting those tensions correct was one of the things that delayed the initial release of the Hamatic movement.


Moritz Grossmann Hamatic Watch Watch Releases

Okay, but how?

Now, this will probably make your eyes glaze over, but here’s how they’ve managed to wind a mainspring from a pendulum. The brand has developed a module called a “yoke winder” to convert the energy generated by the hammer into a continuous wind. Each swing of the hammer clicks one of the two-way directional click levers. Those levers capture the energy from each swing via a reduction wheel that transfers all of it to a free wheel. The free wheel then drives the barrel ratchet, and winds the mainspring. And, as an added bonus, hidden under the beautifully decorated bridge, is a manual winding system. The yoke winder will disengage the manual winding module when the hammer is in motion, and reengage once the crown is popped out. A pretty cool feature.

Decoration is, of course, top notch. The bridge features six Geneva stripes, while the hammer itself is vertically brushed with beveled edges. The wheels feature a similar circular grain while the small bridges are sandblasted to give them contrast. The polished balance wheel and bridge have nice aesthetic, and the brown-violet heat treated screws are fun and practical addition (with heat treating being performed to protect components from future, unwanted oxidization). The movement features a power reserve of 72 hours.

Moritz Grossmann Hamatic Watch Watch Releases


I like this watch way more than I would have expected to from the press release. The unique movement is an engineering feat worthy of attention. The hammer winding system is quaintly obsolete in comparison to the more efficient modern rotor winding system. But it offers a wonderful point of difference and is a great conversation starter. The Hamatic movement took quite some time to perfect, but I find it admirable that the brand took the time to get it right, instead of rushing out a model that wasn’t ready. The price for the Moritz Grossmann Hamatic is €37,600. You can read more about this watch at

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  • DanW94

    Man, what a beautiful watch especially that movement. That handset though. You’d be hard pressed to fiind a thinner minute hand than that one.

    • Independent_George

      Lovely watch. Maybe the handset is too thin? Not sure if they agree with my middle-aged eyesight.

      • Gokart Mozart

        Keep a magnifying glass in your pocket. 😉

        • egznyc

          And keep a pocket watch in your pocket, too.

    • FS1900

      Mucho delicato, Mister Hamato

      • DanW94

        You say delicato, I say tomahto, the hands are ciertamente fragil, Senor Hamato…

  • Agnar Sidhu

    What a movement! What a handset!!

    I like it, I like it a lot!!

    • egznyc

      Said the cat in the hat
      To the fish in the pot.

  • Why even bother putting hands on the watch? No-one can see them without a loupe.

  • Raymond Wilkie

    Glaze over? It’s hardly rocket science.
    It has to be said though that the Hamatic system used to capture energy is a delight.
    I’ll let the video do the talking…

  • Gokart Mozart

    Usually I prefer a Lang & Heyne instead but this is stunning. Front and back. Love the hammer.

    Lovely crown as well.

  • Gokart Mozart
  • Raymond Wilkie

    You’re very welcome.
    Fascinating to see it all come together.

  • Swiss_Cheese

    Make it 38mm and I’ll sell you my nonexistent firstborn, mind you scaling down the watch may cause the minute hand to completely disappear causing a tear in the fabric of reality and the demise of all living organisms. That’s a risk I’m willing to take…

  • What fresh hell is this?

    I mean… it’s a beauty inside and out, to be sure, and watching it do its work is probably a delight, but I can’t help thinking the “okay, but how?” subheading could have been “okay, but why?”

    Or have I answered my own question?

    • Raymond Wilkie

      Why?…Because they could.

      • What fresh hell is this?

        Sure, but is it an improvement over the way we’ve been doing things? I’d love to know.

  • Leonarr

    The hands are quite thin, so I’d probably wear my magnifying monocle with this piece.

  • ?????? ??????????

    Hands are too thin. Nevermind discovering the hot water.

  • WMWM

    I find the hands way too thin, so unbalanced and weird.

  • Ulysses31

    A stunning watch, except for the hands, as everyone seems to agree. Why so thin?

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