Strap for Formula 1 Quartz Chronograph Big Date 44 Stainless Steel / Indy 500 / Bracelet

The TAG Heuer Formula 1 CAH101B.BA0860 features a lug width of 20mm, measured between the case lugs. This specification is critical when purchasing an aftermarket strap, as an undersized or oversized lug width will result in misalignment and premature wear.

The optimal strap choice depends on intended use and aesthetic preferences. For elegance and longevity, alligator leather with vegetable tanning is excellent. For practicality and sportiness, NATO or FKM rubber perform exceptionally. Dark red calf leather highlights the racing accents on the dial, whilst shell cordovan offers patina development and nobility over time.

Strap replacement requires extraction of the case side lugs. Use a spring bar tool to compress the internal springs of the lugs, inserting the new strap into the designated slots. If unfamiliar with this procedure, Casati Milano atelier provides professional assistance with a service guarantee.

Yes. Any strap with a 20mm lug width is compatible with the CAH101B.BA0860. Milano Straps offers a specialised collection of artisanal 20mm straps in alligator leather, calf, shell cordovan and technical materials, customisable in colour, stitching and sizing.

A quality leather strap, such as alligator or vegetable-tanned calf, typically lasts 3–5 years with regular wear, developing characteristic patina over time. Longevity depends on usage, ambient humidity and maintenance. Casati Milano guarantees 18 months on bespoke straps. FKM rubber offers greater durability in humid environments (5–7 years).