You can configure your own watch. To do so, please select a variant of the watch, a strap colour and a clasp. Your selection will be marked by a red border.



Grossmann is introducing a special version of the ATUM Pure in a stainless steel case with the calibre 100.1 movement featuring the precious High-Artistic Finish – the HIGH ART. From the outside, the HIGH ART is nearly unchanged.

The steel case underscores the technical nature of the model family. The HIGH ART also embodies all the hallmarks and underlying values of a classically crafted timepiece signed MORITZ GROSSMANN GLASHÜTTE I/SA.

 You can find more details about this product on our official Moritz Grossmann website.


Additional information


Stainless Steel White, Stainless Steel Blue, Stainless Steel Grey


Manufacture calibre 100.1, manually wound, adjusted in five positions

No. of parts


No. of jewels

20, of which 3 in screwed gold chatons


Lever escapement


Gustav Gerstenberger geometry, Nivarox 1 balance spring, Shock-resistant Grossmann balance with 4 inertia and 2 poising screws, with No. 80 Breguet terminal curve


Diameter: 14.2 mm, Frequency: 18,000 semi-oscillations per hour

Power reserve

42 hours when fully wound

Operating elements

crown for winding the watch and setting the time, pusher to start the movement


Hours and minutes, subsidiary seconds with stop seconds, Grossmann manual winder with pusher


stainless steel, three part

Case Dimensions

Diameter: 41.0 mm, height: 11.35 mm

Movement dimensions

Diameter: 36.4 mm, height: 5.0 mm


hour markers in stainless steel, rhodiumed


Hand-crafted, polished stainless steel, with HyCeram-filling

Crystal / display back

Sapphire crystal, antireflective coating on one side

Special Features

Grossmann balance, Grossmann manual winder with pusher for uncoupling the handsetting mode and restarting the movement, space saving and modified Glashütte stopwork with backlash, adjustment with Grossmann micrometer screw on a cantilevered balance cock, pillar movement with 2/3 plate and frame pillars in untreated German silver, 2/3 plate, balance cock and escape-wheel cock hand-engraved, broad horizontal Glashütte ribbing, 3-band snailing on the ratchet wheel, raised gold chatons with pan-head screws, separately removable clutch winder, stop seconds for handsetting


alligator leather, hand-stiched

Strap color

Black, Dark Brown, Brown, Blue


Pin buckle

Strap Length

XS (-1 cm), Normal, XL (+1 cm)