Strap for Big Crown ProPilot Altimeter Rega / Meter

The lug width of the Oris ProPilot 01 733 7705 4264-Set5 23 16GFC is 23mm. This measurement is specific to this 47mm case model and is calibrated to maintain correct proportions between the case diameter and strap width. Always measure from centre to centre of the spring bars to ensure compatibility with aftermarket straps.

For the ProPilot 01 733 7705 4264-Set5, we recommend three options: a satin-finished alligator in slate grey for a formal-aviation aesthetic; a vegetable-tanned leather in cognac or dark brown for aviation heritage; a compact rubber in black for daily practicality. The choice depends on intended use and personal preference, whilst maintaining visual balance with the substantial case.

To change the strap, you need two essential tools: a spring bar tool and a stable work surface. Position the watch with the lugs clearly visible, insert the fine tip of the spring bar tool under the spring pin, apply gentle inward pressure to release it, then remove the old strap. Insert the new strap by aligning the hole with the pin, release the tool, and verify the pin is firmly seated. Repeat for the other lug.

Yes, any strap with a 23mm lug width is compatible with the ProPilot 01 733 7705 4264-Set5. It is essential to verify precise measurement (centre to centre of spring bars) and ensure the strap thickness does not exceed the lug tolerances. We recommend artisanal straps of certified quality, which guarantee consistency in proportions and noble materials.

Leather strap longevity depends on material, tanning method and usage. High-quality vegetable-tanned leather, with regular maintenance (conditioning every 6–12 months), can last 3–5 years. Rubber has similar durability if not exposed to extreme temperatures. A shell cordovan strap, thanks to fibre density, can exceed 5–7 years. Daily wear requires regular rotation between at least two straps to distribute wear evenly.