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

The lug width of the TAG Heuer Formula 1 CAH1010.BA0860 is 20mm. This dimension corresponds to the internal distance between the suspension lugs (spring bars) of the case. To verify this measurement, position the watch on a flat surface and measure the internal space between the upper and lower edge of each lug. Any strap installed must have holes precisely calibrated to 20mm to ensure perfect fit without misalignment.

The choice depends on usage and aesthetic preference. For sophisticated elegance, an alligator strap with regular grain contrasts magnificently with the chronograph's robustness. For intensive daily use, vegetable-tanned calf offers exceptional comfort and a natural patina that ages beautifully. For sportive applications, a NATO strap in cordura maintains the model's racing heritage. For marine environments or high humidity, FKM rubber guarantees maximum performance and flexibility even at extreme temperatures.

Changing the strap requires a dedicated spring bar tool to gently lift the suspension lugs from both sides of the case. Position the watch with the dial facing downward, insert the bifurcated end of the spring bar tool into the slot beneath the lug, lift with a calibrated motion, and slide the pin outward. Repeat on the opposite side. Install the new strap by reversing the procedure: ensure both pins seat completely in their housings to prevent tears or damage to the strap itself.

Yes. Any strap with a lug width of 20mm is compatible with the CAH1010.BA0860. Milano Straps offers a comprehensive selection of artisanal straps in alligator, calf, shell cordovan, NATO, and rubber, all customisable in size, initials, and thread colour. The Casati Milano atelier also provides fully bespoke made-to-measure solutions, with personal leather selection and an 18-month warranty.

Durability depends on material, usage intensity, and maintenance. A high-quality alligator strap, with moderate use and proper care (avoiding prolonged exposure to moisture and direct sunlight), lasts 5–8 years. Vegetable-tanned calf, thanks to natural tanning, develops a protective patina over time and can last 6–10 years with regular maintenance. Shell cordovan, being very dense, can exceed 10 years. NATO straps in robust fabric often last 7–12 years. Milano Straps guarantees 18 months on all straps from the Casati Milano atelier.