Strap for Formula 1 Solargraph 38 Stainless Steel / White / Bracelet

The lug width of the TAG Heuer Formula 1 WBY1111.BA0042 is precisely 19mm. This measurement is specific to the 38mm case of this model and must not be confused with alternative variants. Accurate measurement with a calliper is essential to ensure correct strap fitment on the case lugs.

For the WBY1111.BA0042, we recommend alligator straps for maximum elegance, shell cordovan for multi-decade durability, vegetable-tanned leather for aesthetic evolution over time, or FKM rubber for sporting contexts. The absence of gold plating on the case renders this model versatile with various colour palettes. Avoid synthetic or canvas straps, which are technically inconsistent with the watch's construction quality.

Use a spring bar tool or consult a professional. Place the watch on a soft surface, locate the small holes at the ansa extremities, insert the tool to depress the elastic pins and remove the old strap. Insert the new strap by aligning the pins to the case lugs, ensuring the spring bar is perfectly coupled. Gentle pressure guarantees the final safety click.

Yes, but with precise constraints. Only straps designed for 19mm lug width are suitable. We strongly discourage adapters or dimensional compromises, as they damage the case lugs and compromise structural fitment. Artisanal quality straps, custom-made or from standard 19mm production lines, guarantee perfect compatibility and aesthetic longevity.

Durability depends on tanning method and usage. Vegetable-tanned calf leather lasts 3–5 years with ordinary maintenance. Shell cordovan exceeds 10–15 years. Alligator can last 7–10 years. FKM rubber has an average lifespan of 5–7 years before losing elasticity. Factors such as sun exposure, humidity and wearing frequency significantly influence longevity. Casati Milano offers an 18-month warranty on all artisanal straps produced.