TAG Heuer · Formula 1

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

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter44 mm
ReferenceWAH1011.BA0854 (aka: WAH1011BA0854, WAH1011)
FamilyFormula 1
MovementRonda caliber 6004.B hours, minutes, small seconds | big date
CaseStainless 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 WAH1011.BA0854 (aka: WAH1011BA0854, WAH1011)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Formula 1 WAH1011.BA0854 (aka: WAH1011BA0854, WAH1011), seen from the bench

The Formula 1 represents TAG Heuer's sports line dedicated to the world of motorsports. The reference WAH1011.BA0854 features the Ronda 6004.B quartz movement with hours, minutes, small seconds and big date indication. The watch presents a functionality-oriented construction for immediate time reading.

Frequently asked questions

What is the lug width of the TAG Heuer Formula 1 WAH1011.BA0854?

The lug width of the TAG Heuer Formula 1 WAH1011.BA0854 is 20mm. This measurement represents the distance between the two lugs (attachment points) where the strap connects to the case. By measuring with a digital calliper between the two spring bar holes, you will obtain the confirmation needed to select compatible aftermarket straps.

What is the best strap for the TAG Heuer Formula 1 WAH1011.BA0854?

The best strap depends on your intended use. For formal elegance, we recommend a satin black or dark brown alligator strap, which amplifies refinement without compromise. For sporting versatility, a cognac or brown calf leather with matching stitching preserves the technical identity of the watch. For aquatic environments and physical activities, FKM rubber or silicone ensures superior resistance.

How do I change the strap on the TAG Heuer Formula 1 WAH1011.BA0854?

Position the watch on a soft pad. Locate the two side lugs (attachment points). Using a strap remover tool, gently push the horizontal pin outward to release the strap. Repeat on the other side. Insert the new 20mm strap by aligning the holes with the lugs and push the pin until it clicks into place. Verify that the stitching on the new strap is oriented inward for correct aesthetic.

Which aftermarket straps are compatible with the WAH1011.BA0854?

Any strap with a 20mm lug width is compatible with the WAH1011.BA0854. Milano Straps offers a complete collection of 20mm straps in alligator, calf leather, shell cordovan, NATO and rubber. Always verify the lug width by measuring it before purchasing to ensure a perfect fit in the lugs.

How long does a leather strap last on a watch like the WAH1011.BA0854?

The lifespan of a leather strap varies depending on the material and usage. Quality artisanal alligator and calf leather straps last 3-5 years with daily wear, developing a natural patina. Shell cordovan, thanks to its intrinsic density, can exceed 7-10 years. Exposure to sweat, moisture and UV rays accelerates wear. By periodically rotating straps and storing them in a dry environment, you can significantly extend longevity.

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