Strap for GA100-MB-1A Black Green

No, the bracelet is integrated into the case and the lugs are proprietary Casio. A standard strap won't attach. I've seen too many people attempt DIY solutions that damage the watch. In my atelier, I build a bespoke strap directly onto the case, so it dialogues with the resin geometry.

We work by appointment only at <a href="/pages/casati-booking">Casati Milano</a>. I take measurements directly from the case, your wrist, your habits. Then I return to the bench and build an attachment that grips without violating the original structure. This is why I cannot do this piece online.

Tuscan leather with vegetable tanning. This watch is pure technical provocation: it deserves leather that ages with character, not an anonymous strap. Tuscan leather darkens, marks itself, tells the story of months on your wrist. It resonates with the rebellious spirit of the piece.

It depends on how you treat it. Good leather withstands 5–7 years of daily wear, even with this robust watch. Leather ages naturally — it darkens, it marks, it develops patina. Once a year, run a light treatment through it. If you leave it dry in permanent sunlight, it suffers sooner.

Casio designed it as a manifesto of indestructible resistance: 55mm, resin, anti-conventional. Precisely because of this technical coherence, I recommend not leaving it with an industrial plastic strap. Leather built to measure transforms a robust instrument into something that grows with you over time.