Casio
G-Shock GA-100 GA-100A-7A
Casio G-Shock GA-100 GA-100A-7A: strap made to measure on the watch at the Casati Milano atelier, by appointment.
Technical Specifications
Casio GA-100A-7AGA-100A-7A
Casio caliber 5081 World Time | Perpetual Calendar | Chronograph, Countdown | Alarm
The Heritage
The strap for this watch is made to measure
On the Casio G-Shock GA-100 the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.
Book a consultation →FAQ
Can a standard strap be mounted on the Casio G-Shock GA-100 GA-100A-7A?
No, because the lug attachment is integrated into the case structure and does not follow classic watchmaking standards. However, a custom-built strap resolves this entirely: <a href="/pages/casati-booking">Casati Milano</a> designs and assembles a strap precisely calibrated to your watch, maintaining constructive coherence and perfect fit.
How does the bespoke strap creation process work for this model?
The craftsman takes direct measurements of the case, attachment geometry, and lug morphology. The strap is designed and built specifically for those dimensions: every element, from the buckle to connection points, is calibrated to the unique shape of your GA-100A-7A. It is an original construction process, not an adaptation of a standard solution.
Which type of leather best suits the character of the Casio G-Shock GA-100 GA-100A-7A?
Leather with marked grain and visible texture that maintains the aesthetic hardness of the resin case: vegetable-tanned leather with natural patina, or technical materials such as waxed canvas or ballistic. The ideal is to avoid smooth or polished leathers, favouring materials that narrate contact with the external environment and reflect the constructive simplicity of the watch.
How long does a well-crafted strap last on this watch?
A bespoke strap realised with noble leather and quality stitching lasts for years, often outliving the watch itself. Durability depends on use, maintenance, and material choice: a vegetable-tanned leather or waxed canvas, if cared for, develops patina and improves over time rather than deteriorating.
Why has the GA-100 remained an icon of global streetwear culture for three decades?
Because the design follows Casio's "Triple 10" principle: constructive resistance, no functional compromises, brutal and readable aesthetics. The modular architecture of the 55mm resin case and integrated bracelet are not decorative, but expressions of a philosophy: the watch is tool and visual identity simultaneously, accessible and radical.