Strap for Atum Pure L Stainless Steel / White

The Moritz Grossmann Atum MG-001091 features a 20mm lug width, which is the distance between the two spring bar pins that connect the strap to the case. Accurate measurement of this dimension is essential before ordering a replacement strap to ensure perfect compatibility.

There is no universal choice—it depends on intended use and personal aesthetic preference. Vegetable-tanned alligator represents the most elegant solution and aligns with the brand's constructive philosophy. Vegetable-tanned calfskin offers superior versatility, whilst a NATO strap is ideal for a more casual, sporty approach. Vulcanised rubber is the most technical and durable choice for demanding environments.

Remove the strap using a spring bar tool: a two-pronged instrument that allows you to press the metal pins (spring bars) inward and release them from their seats on the case. Position the tool on one side of the pin, apply gentle inward pressure, then carefully extract the pin. Repeat on the opposite side, remove the old strap, and insert the new one by aligning the holes and pressing until it snaps into place. If unsure, consult a professional watchmaker.

Absolutely. As the Atum features a standard 20mm lug width, it is fully compatible with any quality aftermarket strap of this dimension. Milano Straps offers custom-crafted straps in leather, alligator, NATO, and rubber, all certified for this lug attachment. The construction quality of bespoke straps often exceeds that of original straps in terms of handwork and material selection.

Leather strap durability depends on usage frequency, UV exposure, humidity, and material type. A well-maintained vegetable-tanned calfskin strap typically lasts 3–5 years of regular wear; alligator, owing to its more robust structure, may last 5–7 years. Vulcanised rubber is even more durable, with an average lifespan of 7–10 years. Regular maintenance—gentle cleaning, thorough drying after humidity exposure—significantly extends strap longevity.