Casio · G-Shock GA-100

Strap for GA-100A-7A White Ice

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Casio G-Shock GA-100 GA-100A-7A is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter55 mm
ReferenceGA-100A-7A
FamilyG-Shock GA-100
MovementCasio caliber 5081 World time | Perpetual calendar | Chronograph, Countdown | Alarm
CaseResin

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The G-Shock GA-100 GA-100A-7A, seen from the bench

The G-Shock GA-100 is part of the Casio line of digital sports watches known for their high impact resistance. It features the Casio 5081 caliber with chronograph, countdown, alarm, perpetual calendar and world time functions. The case has a resin construction with a combined analog-digital display.

Frequently asked questions

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.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only