Strap for Oris Artelier 01 737 7721 4031

The lug width is 21mm. This is a classical dimension for dress watches between 38-40mm, determined by the proportional relationship between case diameter and lug height. To measure correctly, position a digital calliper perpendicular to the bar connecting the lugs, ensuring the measurement is taken inside the lug edges.

For this dress case, we recommend Mississippi alligator in cognac brown or vegetable-tanned calf leather in black. The alligator reflects the minimalist aesthetic of the dial, whilst calf leather develops organic patina over time. Choice depends on purpose: formal only (alligator), versatile daily wear (calf), or chromatic versatility (NATO fabric).

Remove the existing strap by extracting the lugs from their seats on the case flanks. Use a flattened tool (spring bar remover) to gently lift the terminal ends of each lug. Insert the new strap, aligning it with the passthrough holes and ensuring symmetry on both sides. The strap must click into position without forcing.

Any strap with 21mm lug width is compatible. Verify that the strap length accommodates your wrist (typically 75-80mm from buckle to final hole) and that the material is sufficiently rigid during the first wearing period to avoid excessive rotation during initial use.

A quality leather strap (alligator or vegetable-tanned calf) lasts 3-5 years with daily wear, extending to 7-10 years with occasional use. Longevity depends on exposure to humidity, direct heat, and perspiration. Aged patina is desirable, but deep cracking indicates replacement is necessary for security reasons.