Strap for Aquaracer 300M Quartz 41 Stainless Steel / Yellow Gold / Silver / Bracelet

The lug width of the TAG Heuer Aquaracer WBD1120.BB0930 is precisely 20 millimetres. This measurement represents the distance between the two lugs (pins) that protrude from the case and onto which the strap is attached. It is a precise manufacturing specification, not a tolerance: any aftermarket strap must strictly respect this dimension to ensure a perfect fit and aesthetic consistency with the original design.

For the WBD1120.BB0930, we recommend straps in alligator, vegetable-tanned calf leather, shell cordovan, or synthetic rubber. Dark brown alligator enhances the yellow gold case, while black calf emphasises the steel with understated elegance. For maximum longevity and deep patina development, shell cordovan is the ideal choice. For fully waterproof use, synthetic rubber transforms the diver into a fully marine-capable instrument, perfect for water sports and swimming.

Changing the strap requires two essential tools: a spring bar removal tool and a protected flat work surface. Insert the flat end of the tool into the small hole adjacent to the spring bar, gently levering upward to compress the internal spring. The bar will snap out of the case. Repeat for the second lug. Align the new strap with the two lug holes, insert the spring bars, and ensure they click firmly into position. This procedure requires practice: if you prefer to avoid risk, Casati Milano provides a strap-change service at its atelier by appointment.

Yes, any strap with a 20mm lug width is compatible with the WBD1120.BB0930, provided that the spring bars are of identical width and length. Milano Straps offers a comprehensive collection of 20mm straps specifically designed for this model, available in premium leather, rubber, and fabric options. We recommend verifying the strap length relative to your wrist: Milano Straps customises sizes upon request to guarantee optimal fit and comfort.

The durability of a leather strap depends on the material chosen, frequency of wear, and exposure to environmental factors. An alligator or vegetable-tanned calf strap, if properly maintained, lasts between three and five years under daily wear conditions. Shell cordovan, owing to its natural density, can last beyond seven years whilst developing a fascinating patina. To extend strap longevity, we recommend avoiding prolonged exposure to unfiltered fresh water and occasionally applying a protective balm. Casati Milano provides an 18-month warranty on all bespoke straps and offers maintenance and repair services at its atelier.