Strap for Oris Big Crown 01 674 7569 4064

The Oris Big Crown 01 674 7569 4064 features a 21-millimetre lug width. This dimension is determined by the distance between the internal lugs of the case and corresponds to the standard width for thin-profile wrist chronographs. Always verify measurement by placing a ruler between the two lugs, shoulder to shoulder, to ensure compatibility with replacement straps.

For the Big Crown, Tuscan leather with vegetable tanning is the most coherent choice with the watch's aesthetic code. Natural brown evolves over time, creating unique patina and grain that emphasises the vintage character of the instrument. Vegetable-tanned calf offers finer texture if you prefer superior tactile softness. For extreme applications, nylon NATO straps guarantee operational robustness and rapid changeover.

Remove the strap from your wrist. Use a dedicated spring bar tool to compress the internal spring of the lugs. Push towards the centre of the case, extracting one side then the other. To mount the new 21mm strap, insert the lugs into the terminal eyelets of the strap, ensuring the spring bar clicks securely into place. Verify the strap does not rotate on the lugs.

Yes, provided the lug width is exactly 21mm. Quality aftermarket straps, crafted from vegetable-tanned leather or technical materials, are fully compatible. Ensure the passants are open-ended (not closed), particularly important on this model where the oversized crown requires a slim aesthetic profile around the wrist. Avoid deployant clasps: they are not appropriate for the Big Crown.

A well-maintained Tuscan vegetable-tanned leather strap lasts 3–5 years of daily wear, depending on exposure to UV radiation, humidity, and frequency of use. The patina that forms is desirable: it constitutes proof of authentic wear. A more delicate calf vegetable-tanned strap lasts 2–4 years. Store the strap away from excessive humidity and direct light. Apply leather conditioner every 6–12 months to extend structural longevity.