Casio
G-Shock GA-100 GA-100MC-1A
Casio G-Shock GA-100 GA-100MC-1A: strap made to measure on the watch at the Casati Milano atelier, by appointment.
Technical Specifications
Casio GA-100MC-1AGA-100MC-1A
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 you fit a standard strap on the Casio G-Shock GA-100 GA-100MC-1A?
No, the integrated bracelet does not use standard straight bar lugs. However, a bespoke strap does exist and is exclusively crafted at <a href="/pages/casati-booking">Casati Milano</a> atelier, where it is measured directly on your watch and built to match the precise geometry of your case.
How does the bespoke strap construction work for this model?
The craftsman at Casati Milano takes a detailed technical measurement of the proprietary lugs directly on your GA-100MC-1A, noting width, depth, and angle. A leather strap is then constructed to these specifications, integrating perfectly with the case without forced adaptation or compromise.
Which leather suits the character of the Casio G-Shock GA-100 GA-100MC-1A?
Structural leathers with coarse grain—such as American Chromexcel—emphasise the watch's robustness, while Italian vegetable-tanned leathers offer more understated elegance. Bright colours are not recommended: black, dark brown, and burgundy respect the model's aesthetic identity and develop beautiful patina over time.
How long does a quality artisanal strap last on a watch like this?
A strap crafted in vegetable-tanned leather to proper standards lasts 5 to 10 years of regular wear, developing characteristic patina that increases its appeal. Longevity depends on intensity of use and maintenance, but quality stitching and leather guarantee structural reliability over time.
Why does the GA-100MC-1A remain a reliable tool after 40 years of G-Shock history?
The Casio 5081 calibre houses essential functions—world time, perpetual calendar, chronograph and alarm—without unnecessary complexity. The resin case absorbs impacts, the dial remains intuitive to read under stress, and the construction echoes the founding principle: protecting the timekeeping element without aesthetic compromise.