Strap for Formula 1 Quartz Chronograph Big Date 44 Stainless Steel / White / Bracelet

The lug width (or strap width) of the TAG Heuer Formula 1 CAH1011.BA0854 is 20 millimetres. This dimension is the specific standard for this model and is determined by the constructive proportions of the case and the width of the lug bar. To measure it correctly, use a digital calliper or flexible ruler positioned perpendicular to the internal attachment points of the case.

The choice depends on your intended use and aesthetic preferences. For a sophisticated sartorial appearance, we recommend alligator in dark blue or burgundy, or premium calf leather with vegetable tanning in cognac or rich brown tones. For a pure racing character, consider a NATO strap in polyamide in navy blue or anthracite grey. For aquatic or dynamic environments, structured or smooth FKM rubber is the ideal technical solution.

To change the strap, obtain a spring bar tool (pin removal tool). Position the watch on a stable surface, locate the pins that secure the bracelet to the case lugs, insert the tool into the lateral hole of the pin and lift slightly whilst pulling the bracelet outwards. Repeat on the other side. To install the new 20mm strap, align the pin with the lug, press gently until the pin seats fully. Verify that the strap is firmly secured before wearing the watch.

Yes, the TAG Heuer Formula 1 CAH1011.BA0854 is compatible with any strap featuring a 20-millimetre lug width. Online you will find a wide range of straps in artisan leather, alligator, calf, NATO and rubber. We recommend selecting straps crafted with attention to quality and noble materials to do justice to the proportions and sporting character of the watch. The Casati Milano atelier creates bespoke custom straps for this reference.

The durability of a leather strap depends on build quality, tanning method and intensity of use. An artisan strap in premium calf leather with vegetable tanning, worn daily and cared for appropriately (protection from excessive moisture and direct sunlight), can last 4-7 years whilst maintaining beauty and functionality. Premium leathers such as alligator, if treated with care, exceed 10 years. NATO and rubber straps have superior durability (10-15 years) thanks to the structural resistance of polyamide and FKM. The Casati Milano atelier guarantees 18 months on all its artisan straps.