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TAG Heuer · Aquaracer

Strap for Aquaracer Professional 300 36 Stainless Steel / Blue / Bracelet

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

Lug width

20mm
20 mm strapsAll TAG Heuer
Lug width20 mm
Case diameter36 mm
ReferenceWBP231B.BA0618
FamilyAquaracer
MovementTAG Heuer caliber 5 hours, minutes, seconds | date
Year2021
CaseCeramic, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Aquaracer WBP231B.BA0618

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aquaracer WBP231B.BA0618, seen from the bench

The Aquaracer represents TAG Heuer's line of diver's watches, characterized by high water resistance and robust construction. The model WBP231B.BA0618 mounts the automatic Calibre 5 movement with hour, minute, second and date indication. The collection maintains the typical technical specifications of the brand's Swiss sports watches.

Frequently asked questions

What is the lug width of the TAG Heuer Aquaracer WBP231B.BA0618?

The lug width of the WBP231B.BA0618 is 20 millimetres. This measurement is the evolved standard for wrists proportioned between 155 and 180 centimetres and represents the optimal compromise between easy strap changing and correct aesthetic proportions relative to the 36mm case diameter.

Which strap do you recommend for the TAG Heuer Aquaracer WBP231B.BA0618?

For the WBP231B.BA0618 we recommend three profiles: top-grade alligator for formal elegance, vegetable-tanned calf for aesthetic evolution over time, FKM rubber for intensive saltwater or sporting use. Choice depends on usage context and colour preference. Milano Straps offers sample kits to evaluate texture and patina in real life before purchase.

How do you change the strap on a TAG Heuer Aquaracer WBP231B.BA0618?

The WBP231B.BA0618 features standard straight lugs at 20mm width. Obtain a spring bar tool and position it beneath the lug spring, compressing it towards the case centre. Remove the straight lug, thread the new strap, and reinsert the lug ensuring full engagement in the housings. Verify the strap is centred relative to the case before wearing.

Is any 20mm strap compatible with this TAG Heuer model?

Yes, any 20mm strap with standard straight lugs is compatible with the WBP231B.BA0618. However, to maximise aesthetics, we recommend straps of moderate thickness (1.2–1.5mm) that do not create excessive lateral protrusion. Milano Straps premium aftermarket straps are tested for optimal proportions on this specific model.

How long does a leather strap last on the TAG Heuer Aquaracer WBP231B.BA0618?

A premium alligator or calf strap lasts 3–5 years with routine maintenance (quarterly cleaning, no prolonged fresh/saltwater contact). Vegetable-tanned leather ages visibly and requires greater care (leather cream every 6 months) but produces desirable patina. FKM rubber straps resist indefinitely but require replacement every 18–24 months to maintain ergonomics and tactile softness.

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