Strap for Aquaracer Professional 300 36 Stainless Steel / Turquoise - Diamond / Bracelet

The lug width of the TAG Heuer Aquaracer WBP231K.BA0618 is precisely 20mm, measured centre-to-centre between the integrated case lugs. This dimension reflects the 36mm case diameter and ensures a harmonious transition to the wrist. To verify the measurement, use a ruler or calliper positioned perpendicularly between the case horns.

The choice of the best strap depends on intended use and personal preference. For formal occasions, brown alligator leather maintains sporting elegance with natural grain texture. For technical and aquatic applications, vulcanised rubber is ideal as it resists moisture and allows quick changes. Vegetable-tanned calf represents a versatile compromise, developing a unique patina over time. Nylon NATO is perfect for outdoor activities thanks to durability and swift strap changes.

Changing the strap on this reference requires a dedicated spring bar tool. Position the watch with the strap facing downwards, locate the small metal pin that passes through the lug, insert the flat tip of the tool into the access hole, and press gently outwards to release the pin. Repeat on the opposite side. To avoid damage to the ceramic lug, use controlled movements and quality tools.

Yes, any strap with a 20mm lug width is compatible with the WBP231K.BA0618, provided that the pins are identical in diameter and length. Milano Straps offers a complete collection of handcrafted 20mm straps made from premium leathers such as alligator, vegetable-tanned calf, and shell cordovan. Each strap can be personalised in length, initials, and stitching thread to fit your wrist perfectly.

The lifespan of a leather strap depends on the material and usage. Vegetable-tanned calf, when worn regularly without prolonged humidity exposure, lasts on average 3–5 years. Alligator, thanks to denser skin structure, reaches 5–7 years. Shell cordovan, with its memory properties, can exceed 7 years with proper maintenance. Casati Milano's atelier provides an 18-month warranty on bespoke straps and offers regeneration and extension services to prolong the accessory's useful life.