Casio
G-Shock 6900 GD-X6900CM-5

No. The bracelet is integrated into the case; there's no standard lug to attach a conventional strap. I've watched people try it — it doesn't work. For the 6900, I craft the strap bespoke, adapting it to the resin's unique geometry.

I work solely at the <a href="/pages/casati-booking">Atelier Casati Milano</a>, by appointment only. I bring your watch to the bench, study the case geometry millimetre by millimetre, and build the custom attachment directly onto your resin. No shortcuts.

I favour Tuscan vegetable-tanned leather. It has the weight and density that speaks to the tactical brutality of this resin. Does it age poorly? No — it improves. After two years you see a patina that tells the story of wear, and that's real beauty.

That depends on how you treat it. A vegetable-tanned leather built properly lasts 4 to 5 years of daily, even heavy use. The leather breathes, doesn't rot. If you dry it when wet and nourish it occasionally, it ages with dignity. Then you decide whether to renew it or keep it as it is.

It emerged in 1995 as a tactical evolution: three eyes, heavier resin, proprietary lugs that Casio never standardised. Special operators and the street adopted it for the same reason — it's uncompromising, no trade-offs. It deserves a strap that respects that philosophy, not betrays it.