Strap for Big Crown ProPilot Chronograph Stainless Steel / Black

The lug width is precisely 22mm. This measurement represents the internal distance between the two lugs of the case. A strap with 22mm lug width will fit perfectly into the watch attachments without play or binding. To verify absolute compatibility, use a digital calliper positioned perpendicularly between the lugs from the underside of the case.

The ideal strap depends on your intended use: for pure avionic elegance, choose an alligator leather with vegetable tanning in anthracite black or pilot grey; for daily versatility, a structured grain calf offers softness and durability; for professional function, an FKM (Viton) rubber guarantees thermal resistance and hygiene without compromise. All our 22mm straps have been tested on ProPilot cases identical to this model.

Changing the ProPilot strap requires a spring bar tool. Remove the watch from your wrist and position it on a stable surface with the case facing upward. Insert the flat tip of the spring bar tool into one of the small lateral holes of the lower lug, pushing gently to compress the internal spring: the pin will loosen and the strap will be released. Repeat on the opposite lug. Install the new strap by inserting one end of the pin into one case lug first, then compress the spring on the opposite side until complete insertion. Verify that the pin is perfectly centred.

Yes, absolutely. Any strap with a 22mm lug width is compatible with the Oris ProPilot 01 774 7699 4134-07 5 22 19FC. Our Milano Straps handcrafted straps are manufactured to manufacturing tolerances identical to Oris standards, guaranteeing precise and secure fit. We recommend ordering a trial strap before investing in higher-priced models (such as vegetable tanned alligator) to verify personal preference for comfort and aesthetics.

A quality leather strap with vegetable tanning lasts an average of 3-5 years with daily wear, provided it is maintained correctly. Exposure to sunlight, fresh water and humidity accelerate the natural ageing of leather; conversely, vegetable tanned leathers develop a sought-after patina precisely because of this contact. A structured grain calf strap easily reaches 5-7 years of life. FKM (Viton) rubber straps have an even longer lifespan, up to 10 years, but require periodic cleaning with lukewarm water and neutral soap to maintain elasticity.