Strap for Big Crown Telemeter Chronograph Stainless Steel / Black

The Oris Big Crown 01 674 7569 4064-07 8 21 61 features a lug width of 21mm. This dimension is standard across the model and compatible with aftermarket straps in leather, NATO fabric, and rubber of the same width. Measurement should be taken between the inner edges of both lugs, from bottom to top surface.

Selection depends upon use case and aesthetic preference. For formal contexts, we recommend an alligator strap in dark brown or black, which reinforces the aviator heritage. For daily wear, vegetable-tanned calf ages harmoniously alongside the steel case. A military grey NATO strap recalls the tool-watch origins. For humid environments, an FKM rubber strap offers practical durability and corrosion resistance.

Remove the watch and position it on a soft surface. Using a spring bar tool, press inward toward the case lug to release the spring mechanism on one side, then repeat on the opposite side. Align the new strap's holes with the lugs and secure using the spring bar tool, ensuring both pins are fully seated and locked in place.

Yes, any strap with a 21mm lug width is compatible. Artisan-crafted leather, NATO textile, rubber, and specialist materials such as alligator and shell cordovan all pair correctly. Always verify identical lug width and secure spring bar placement. Vegetable-tanned leather requires periodic care, while rubber straps offer practicality and extended service intervals.

A high-quality artisan leather strap typically lasts 18–36 months with daily wear, depending on exposure to perspiration, humidity, and sunlight. Vegetable-tanned leather develops natural patina and extended usable life if maintained regularly. Alligator and shell cordovan age more slowly due to fibre density. FKM rubber resists degradation for 3–5 years. A well-maintained strap can be restored by specialist craftspeople.