Strap for Oris BC3 01 635 7500 4164

The lug width of the Oris BC3 01 635 7500 4164 is 20mm. This measurement is standard across all BC3 models and is compatible with a wide selection of artisanal straps. The measurement can be verified by positioning a calliper between the internal terminals of the spring bar attachment on the watch.

The choice depends on intended use. For an elegant-sporty configuration, we recommend alligator or vegetable-tanned calf leather in shades of brown or burgundy. For maximum practicality and authentic tool watch character, a NATO strap in recycled filaments or a vulcanised rubber strap are excellent choices. The black dial naturally pairs with saturated colours such as military green, navy blue, or dark brown.

Strap replacement requires the use of a specific tool: a spring bar tool. Position the watch on a soft surface and protect it with a cloth. Insert the thin end of the spring bar tool into the small hole located beneath the original strap, gently pushing towards the opposite side to force the spring bar outwards. Once one end is freed, extract the spring bar completely and repeat on the other lug. Insert the new strap by positioning the spring bar in the corresponding holes and verify that it is firmly secured.

Yes, completely. The 20mm lug width is a standard measurement in the watch industry, and the BC3 accepts any third-party strap manufactured for this width. Artisanal straps produced in Italy using traditional methods—alligator leather, calf leather, NATO in recycled filaments—are fully compatible and offer the opportunity to completely customise the aesthetic identity of the watch.

A high-quality leather strap, manufactured using vegetable tanning, has an average lifespan of 3 to 5 years with daily wear, conditioned by environmental factors and maintenance. Exposure to moisture, direct sunlight, and heat accelerates natural ageing. The beauty of a vegetable-tanned leather strap lies precisely in its evolving patina: over time it develops a unique texture and deeply personal character. Strap replacement represents an opportunity to refresh the aesthetic of the watch.