Strap for Aquaracer 300M Calibre S 43 Stainless Steel / Blue / Bracelet

The lug width of the CAF7012.BA0815 is precisely 20 millimetres. This dimension represents the vertical distance between the two symmetrical holes where the spring bars are lodged to attach the strap to the case. Accurate measurement is essential to avoid mechanical conflicts with the lugs and ensure smooth strap changes.

For this model, we recommend alligator in dark brown or black tones for formal elegance, or vegetable-tanned calf for those who appreciate the natural patina that emerges over time. If you frequently use the watch in aquatic environments, shell cordovan maintains structural integrity even with prolonged moisture exposure. FKM rubber offers maximum comfort in hot climates, whilst textile NATO provides versatility and rapid strap changes.

To change the strap, remove the old one by pressing the spring bars: position a spring bar tool (or a thin, rounded object) in the lateral slot of the lug, push the bar towards the centre to compress it, and extract the end link. Subsequently insert the new strap by aligning the two holes with the lug, then release the bar to lock it. Verify correct positioning before wearing the watch.

Yes, any artisanal strap with a 20-millimetre lug width is perfectly compatible with the CAF7012.BA0815. Aftermarket straps offer significant advantages: superior material selection (alligator, vegetable-tanned calf, shell cordovan), aesthetic customisation (initials, thread colour), high-quality deployante buckles and superior build longevity compared to standard straps. Simply ensure the lug width is exactly 20mm.

The lifespan of a leather strap depends on material quality, frequency of use and environmental exposure. Artisanal-grade alligator or calf resists between 3 and 5 years with daily wear, with longer periods if used occasionally. Shell cordovan reaches lifespans of 7-10 years thanks to its dense fibrous structure. Wear manifests through colour attenuation, texture relaxation and possible peeling in critical zones (wrist edge, buckle). Semi-annual maintenance with specific hydrating creams significantly extends the strap's lifespan.