Strap for Artelier Date Diamonds 31 Stainless Steel / Black

The lug width is 14mm, a specific measurement that does not correspond to standard market formats such as 16mm, 18mm, or 20mm. To verify strap compatibility, use a digital calliper and measure precisely the interior of the lug, avoiding the lug cheeks which may present geometric narrowing. Even a 0.5mm deviation invalidates compatibility.

The choice depends on usage and aesthetic preferences. Tail alligator with fine grain is ideal for formal settings and develops organic patina over time. Vegetable-tanned calf offers versatility and predictable ageing characteristics. Cotton NATO maintains visual lightness and breathability, whilst fluoroelastomeric rubber is the most durable solution in humid environments or with significant thermal variations.

Strap replacement is performed via the lateral lugs. Use a dedicated strap-removal tool with a flat lever to gently lift the spring bar, taking care not to scratch the case. Once the pin is removed, the old strap releases easily. Insert the new 14mm strap aligning it correctly with the case lugs, then reinsert the pin with fluid, precise movements until fully locked.

Yes, any strap with a 14mm lug width is mechanically compatible. However, it is advisable to verify that the strap has been crafted from superior-quality leather and that the rivets or attachments maintain the same steel tone as the case to preserve the timepiece's aesthetic harmony. Milano Straps offers premium 14mm straps specifically designed for Oris models in this segment.

Leather strap durability depends on frequency of use, ambient humidity and quality of tanning. Well-maintained tail alligator or vegetable-tanned calf typically lasts 3–5 years in daily wear before replacement becomes necessary. Fluoroelastomeric rubber can last 5–7 years due to oxidation resistance. Regular maintenance—drying the strap after humidity exposure and applying specific balms—significantly extends longevity.