Strap for GA-100-1A1 Black Black

No, the bracelet is integrated into the case — the lugs are proprietary and a standard strap won't attach. I've seen many failed attempts. To personalise it, I build a custom strap directly onto the watch, in the atelier.

We work by appointment only at <a href="/pages/casati-booking">Casati Milano</a>. I take measurements directly from the case, study the geometry of the integrated lugs, and create a strap that fits perfectly, respecting the original architecture.

I prefer robust vegetable-tanned leather — it has the sporty character this watch deserves. It ages beautifully, develops authentic patina, and resists daily wear without failure. I avoid leather that's too soft: this model has a technical soul.

A quality vegetable-tanned leather strap lasts years — I've seen them wear well for 5, 6 years with conscious use. Leather needs air and light maintenance; if you stress it daily without care, it ages differently. What matters is respect for the material.

It was born from a 1983 challenge: Casio wanted an indestructible watch. The reinforced resin case and integrated bracelet came from that philosophy. For the owner, it means having a real tool — not an accessory. A custom strap transforms it without betraying its soul.