Strap for Aquaracer 300M Quartz 35 Stainless Steel / Diamond / Blue MOP / Bracelet

The TAG Heuer Aquaracer WAY131N.BA0748 features a 20-millimetre lug width. This measurement represents the precise distance between the lateral spring bar attachment holes and is the fundamental parameter for selecting a compatible aftermarket strap. Always verify this measurement using a digital calliper before ordering a replacement strap.

For this 35mm model featuring a mother-of-pearl dial and black ceramic bezel, we recommend alligator straps in subtle tones to emphasise the precious element, or vegetable-tanned leather in teal or black to underline its diving watch heritage. A versatile option is vegetable-tanned calf leather, which develops patina over time. For purely sporting use, structured FKM rubber is the most technically appropriate choice.

Strap replacement is performed using a spring bar tool (a small lever-action implement) to release the spring bars from inside the lugs. Gently press the circular cutting edge to disengage the pin, extract the old strap, insert the new one by aligning the spring bar with the designated holes, and press until you hear the engagement click. The operation requires care to avoid scratching the case.

Yes, any strap with 20-millimetre lugs is geometrically compatible with the WAY131N.BA0748. Milano Straps offers handcrafted 20mm straps customisable in leather, colour, and finish. The Casati Milano atelier creates bespoke made-to-measure straps with direct material selection and an 18-month warranty.

The durability of a leather strap depends on usage patterns and material quality. High-quality artisanal calf leather with vegetable tanning typically lasts 3–5 years with daily wear, accounting for perspiration and UV exposure. Alligator leather, due to its more robust structure, exceeds 5 years of service. To maximise longevity, avoid prolonged immersion and dry promptly after water contact. Casati Milano provides an 18-month warranty on every handcrafted product.