Moritz Grossmann
Atum MG-000703— lug 20mm

The Moritz Grossmann Atum MG-000703 features a lug width of 20mm, an intermediate standard enabling versatile compatibility with leather, rubber, and fabric straps. This measurement must be verified with precision using a digital calliper on the internal seat of the attachment.

For the MG-000703, we recommend straps in alligator leather with vegetable tanning or fine-grained calf leather, which enhance the Saxonian sobriety of the case. Cognac alligator creates an elegant contrast with the steel, while calf maintains superior tactile softness. For daily use with moisture exposure, natural rubber with deployante is practical and visually balanced.

Remove the strap using a spring bar removal tool. Position the tool tip in the lower slot of the lug and press gently upward to release the spring bar, then extract the old strap. Insert the new strap by aligning one end first, then compress the spring bar with the tool into the second slot until it clicks securely.

Yes, aftermarket straps of quality with 20mm lug width are fully compatible. It is essential to verify the maximum thickness of 3.2mm to ensure a closure without strain. We recommend straps from specialised suppliers in fine leather (alligator, calf, cordovan) to preserve the aesthetic authenticity of the timepiece.

An alligator strap with vegetable tanning lasts an average of 4–5 years with daily use, developing an appreciable natural patina. Calf leather has a similar lifespan (4–6 years), whilst rubber can reach 8–10 years with proper maintenance. Longevity depends on exposure to humidity, heat, and the frequency of wear.