Strap for Oris Classic 01 561 7650 4031

The lug width of this model is 14mm. This is a non-standard measure, smaller than the typical 16mm or 18mm widths found on many Swiss timepieces. Measurement is taken by calculating the distance between the inner edges of the two lugs (the protruding parts where the strap anchors to the case), with the calliper positioned parallel to the case and perpendicular to the movement.

The choice depends on usage and personal aesthetic preference. For formal wear: a cognac-brown alligator or vegetable-tanned black calf. For versatility: a grey or navy cordura NATO. For sports and wet conditions: black or grey vulcanised rubber. The determining factors are compatibility with the 14mm lug width and visual harmony with the compact 28.5mm diameter.

Remove the watch from your wrist and place it on a clean, soft surface. Locate the spring bar (elastic pin) passing through each lug: push it outward using a dedicated spring bar remover tool or a thin blade, levering carefully. Once the pin is extracted, the strap disengages completely. Align the new 14mm lug width strap with the lugs and reinsert the spring bar by pushing until it clicks into place.

Yes, any strap with a 14mm lug width is compatible, regardless of brand. The key is verifying that the lugs are actually 14mm wide, as some budget straps contain manufacturing tolerances. Bespoke artisan straps, such as those offered by Milano Straps, provide the advantage of conscious material selection and construction quality that further amplifies the aesthetic potential of this timepiece.

Durability depends on frequency of use, environmental conditions (humidity, direct sunlight) and leather quality. A premium alligator or shell cordovan strap resists 3–5 years with daily wear, developing an improved patina and colour. A vegetable-tanned calf strap lasts 2–4 years, with noticeable and appreciable aesthetic ageing. Accelerating factors: excessive perspiration, repeated water contact, extreme temperatures. Regular maintenance (gentle cleaning, application of specific balms) significantly extends longevity.