Strap for Big Crown ProPilot Worldtimer Stainless Steel / Black

The lug width of the Oris ProPilot 01 690 7735 4164-07 1 22 72FC is exactly 22mm. This dimension is calculated in proportion to the 44.70mm case diameter to ensure visual balance and structural stability of the strap. Verify the measurement by positioning a digital calliper perpendicular to the two lugs.

The best strap depends on usage and personal preference. For an authentic interpretation of the ProPilot's aviation character, a NATO Premium strap in technical fabric is the purest choice. If you wish to soften the impact without compromising aesthetic coherence, a leather from vegetable tanning of supreme quality (such as our Toscano) naturally ages over time and creates a superior tactile relationship. Technical rubber and alligator represent alternatives for sports usage or greater formality.

To change the strap you require specific tools: a spring bar removal tool with bifurcated ends, or a small steel lever. Gently remove the spring bars connecting the strap to the watch lugs by levering from below upward. Once extracted, the old strap will detach completely. Insert the new strap to the lugs and reinsert the bars, ensuring they click firmly into place. If you are inexperienced, consult a professional watchmaker to avoid damage.

All straps with a 22mm lug width are compatible with this model. This includes NATO fabric, leather of any tanning method (vegetable, supreme vegetable, alligator, cordovan), technical rubber, nylon and cotton canvas. Always verify that the strap is specified for 22mm lug width before purchase. Milano Straps offers a complete collection of 22mm straps in varied materials and colours, specifically curated for models such as the ProPilot.

The durability of a leather strap depends on tanning method, thickness and usage. A vegetable-tanned leather of superior quality (such as our Toscano), if subjected to normal use and basic maintenance, lasts 4-6 years. Industrial-tanned leather tends to deteriorate sooner (2-3 years). Alligator and shell cordovan, being more resilient natural materials, last 6-10 years. Modern technical rubber ensures 8-12 years. The patina forming on genuine vegetable-tanned leather is evidence of conscious ageing, not wear.