TAG Heuer · Formula 1

Strap for Formula 1 Chronograph Quartz Stainless Steel / The Watch Gallery

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
ReferenceCAZ101A.BA0842
FamilyFormula 1
MovementRonda caliber 5040.D hours, minutes, small seconds | date | Chronograph
Year2016
CaseAluminium, Stainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Formula 1 CAZ101A.BA0842

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Formula 1 CAZ101A.BA0842, seen from the bench

The TAG Heuer Formula 1 CAZ101A.BA0842 is equipped with the Ronda 5040.D quartz movement with hour, minute, small seconds, date and chronograph functions. The watch features 21.5mm lugs and belongs to the Formula 1 collection dedicated to the world of motorsports. The quartz movement ensures precision and reliability in the chronograph functions.

Frequently asked questions

What is the lug width of the TAG Heuer Formula 1 CAZ101A.BA0842?

The TAG Heuer Formula 1 CAZ101A.BA0842 features a 22mm lug width. This dimension corresponds to the internal width of the case between the two lugs and is the fundamental parameter for selecting a compatible strap. Measuring with a digital caliper between the inside of the lugs, you will obtain approximately 22mm. Any strap produced for this lug width will fit your watch perfectly.

What is the best strap for the TAG Heuer Formula 1 CAZ101A.BA0842?

The choice depends on your intended use. For formal and urban contexts, we recommend black alligator with contrasting stitching, which enhances the sporty design whilst maintaining elegance. For outdoor situations and humid environments, vegetable-tanned leather offers superior resistance and develops a fascinating patina over time. For pure motorsport use, a NATO strap in polyamide guarantees maximum security and replacement convenience without tools. An FKM rubber strap represents the ideal technical compromise for those using the chronograph in intense physical activities.

How do you change the strap of the TAG Heuer Formula 1 CAZ101A.BA0842?

Strap replacement requires a specific tool: a spring bar tool (small metal extractor) or an appropriately sized needle. Position your watch with the lug facing upwards. Insert the spring bar tool into the lateral groove of the spring bar pin, exerting gentle downward pressure to compress the internal spring. Extract the pin by pulling gently. Repeat on the other side. Insert the new strap by first threading one end, then aligning the pin in its seat and securing it with controlled pressure. The operation takes no more than two minutes.

Is an aftermarket strap compatible with the TAG Heuer Formula 1 CAZ101A.BA0842?

Yes, any strap produced for 22mm lug width is completely compatible with the CAZ101A.BA0842. Compatibility is guaranteed by this standard dimension, regardless of manufacturer. We recommend purchasing from reliable producers that certify lug width: lower-quality straps may present construction tolerances that cause friction or excessive play on the pins. Bespoke personalised straps offer the additional advantage of being cut to fit your wrist, avoiding excess holes.

How long does a leather strap last on the TAG Heuer Formula 1 CAZ101A.BA0842?

Durability depends on material, frequency of use and environmental conditions. High-quality alligator, worn moderately, typically lasts 3-4 years before showing obvious signs of wear (edge fraying, weakened stitching). Vegetable-tanned leather is more resistant and can achieve 5-6 years of intensive use. NATO straps in polyamide last indefinitely, though stitching may fail after 2-3 years of daily wear. To extend durability, avoid prolonged contact with saltwater, direct intense sunlight exposure and excessive flexing. A good practice is to rotate between two straps, distributing wear.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only