Strap for Formula 1 Chronograph Quartz Stainless Steel / Beaverbrooks

The lug width of the TAG Heuer Formula 1 CAZ101T.BA0842 is 22 millimetres. This measurement is the standard for mid-to-large Formula 1 models and determines compatibility with any aftermarket strap. You can verify the measurement using a digital calliper, inserting it perpendicularly between the two lugs of the case.

There is no single "best" strap, as the choice depends on intended use. To maximise the watch's sporting character, we recommend an alligator strap in vegetable tanning or a superior-quality FKM rubber. For more formal contexts, dark brown or black vegetable-tanned calf maintains elegance without compromise. A modern alternative is cordovan, which develops patina over time, creating a personally meaningful visual narrative.

The procedure is straightforward: position the watch on a soft surface with the case facing upward. Using a spring bar tool (small steel lever), gently press towards the centre of the lug to release the internal spring mechanism. Extract the spring bar and replace it with a new one, or reuse the existing one after inserting the new strap. Ensure the spring bar clicks into place on both lugs of the new strap, confirming it is securely locked.

Yes, all artisanal straps designed for 22mm lug width are compatible with the CAZ101T.BA0842. On milanostraps.it you will find a comprehensive collection of straps in alligator, calf, shell cordovan and rubber, all tested for this case. You can personalise them in width, length, initials and stitching thread according to your preferences.

A superior-quality leather strap, such as vegetable-tanned alligator or cordovan, lasts 3–5 years with daily wear, provided regular maintenance is observed. Vegetable-tanned leather ages beautifully, developing a patina that tells the story of the watch. If exposed to intense humidity and perspiration, longevity may reduce; in such cases, an FKM rubber strap offers superior resistance without requiring maintenance. The Casati Milano atelier provides 18 months' warranty on all artisanal straps.