Strap for Big Crown ProPilot Calibre 114 Stainless Steel / Grey / Textile

The lug width is 22mm. This measurement represents the standard established by Oris for this particular model and ensures correct visual balance between the 44mm case and the wrist. To verify the measurement, position a ruler between the internal pins of the case lugs: the distance from inside to inside must correspond exactly to 22mm.

A NATO strap woven from regenerated fibres or a calf leather strap with vegetable tanning represents the technically optimal choice. NATO offers tactical practicality and sustainability, ideal for daily use. Vegan leather of 1.3-1.5mm thickness confers formal elegance whilst maintaining the avionic identity of the model. FKM rubber is recommended if the timepiece will come into contact with aviation fluids or high-humidity environments.

Use a spring bar tool to extract the metal pins from the case lugs. Position the small hook of the tool between the pin and the case, apply gentle pressure to release the pin. Insert the new strap by aligning the side holes with the pins and push until an audible click is heard. Never force: a well-designed strap inserts with moderate pressure. It is recommended to perform the operation on a cushioned surface to avoid damage to the case.

Yes, numerous specialised manufacturers offer certified 22mm lug width straps. Milano Straps supplies artisanal straps in leather, NATO and rubber specifically dimensioned for this model. High-quality aftermarket straps guarantee the same durability and finish as original Oris models, with the advantage of chromatic customisation and superior material options.

A calf leather strap with vegetable tanning has an average lifespan of 3-5 years with regular daily use. Longevity depends on exposure to moisture, perspiration, extreme temperatures and frequency of direct sunlight exposure. Proper maintenance—regular drying after sweat contact, conditioning with natural balm every 6-8 months, protection from direct UV rays—significantly extends useful life. Shell cordovan, if available, reaches 7-10 years of use thanks to the superior crystalline density of equine leather.