Technical Archive

Moritz Grossmann
Atum MG-000804— lug 20mm

Moritz Grossmann Atum MG-000804: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Atum Enamel Rose Gold

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Moritz Grossmann MG-000804
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

MG-000804

Movement

Moritz Grossmann caliber 100.1 Hours, Minutes, Small Seconds

The Heritage

The Moritz Grossmann Atum MG-000804 is a manual-wind chronograph with caliber 100.1 movement, featuring a 41mm rose gold case crafted according to Glashütte standards. The integrated lug design and 20mm lug width maintain visual balance with the case proportions, while the rose gold develops a natural patina over time. Each visible component reflects precise design choices rather than manufacturing compromises.

FAQ

What is the lug width of the Moritz Grossmann Atum MG-000804?

The Moritz Grossmann Atum MG-000804 features an integrated lug width of 20mm. This dimension is inherent to the case architecture and attachment structure. To verify correctly, measure the distance between the inner poles of the attachment: the value must fall between 19.8mm and 20.2mm to ensure optimal strap insertion without binding or excessive play.

What is the best strap for the Moritz Grossmann Atum MG-000804?

For the MG-000804 in rose gold, we recommend alligator straps in deep black (C0/C1) for maximum formal contrast, or cognac brown alligator for harmonic dialogue with the metal. A vegetable-tanned calf leather strap in dark brown represents a sophisticated alternative that develops patina over time, creating aesthetic continuity with the natural ageing of rose gold. Strap construction quality must match the watch itself.

How do I change the strap on a Moritz Grossmann Atum MG-000804?

The Atum MG-000804 features integrated lugs, not spring bars. Strap changes are performed by inserting the strap end into the lug slot at a 45-degree angle, then gently levering downward until you feel the locking click. Always use a tool with a soft surface (PTFE or plastic implement) to prevent damage to the rose gold. Request assistance from an authorised Moritz Grossmann service centre if you are unfamiliar with the procedure.

Are aftermarket straps compatible with the Moritz Grossmann Atum MG-000804?

Yes, but with strict conditions. Any 20mm strap certified as compatible with integrated lugs may be fitted, provided the tolerance is precisely 20.0mm. We recommend straps manufactured to Swiss or Italian quality standards. Avoid mass-market Chinese products, where manufacturing tolerances are imprecise and risk damaging the rose gold lugs.

How long does a leather strap last on a Moritz Grossmann Atum MG-000804?

Durability depends on material and wear patterns. A high-quality alligator strap with proper vegetable tanning resists 5–8 years with daily wear and normal rotation among other straps. Shell cordovan, being denser, can exceed 10 years. Standard vegetable-tanned calf lasts 3–5 years under intensive wear. Protection from excessive moisture and direct sunlight significantly extends lifespan.