New Releases · 2026-11-07
G-SHOCK GAC-2500-1A strips the new analog idea back to all black
The 47-gram GAC-2500-1A delivers the 2500-series analog functions in a lightweight bio-based resin case.
By Chronolume digest · Original English summary · Based on Casio official product page

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What to know
The GAC-2500-1A is the purest resin expression of Casio’s new analog platform. Its black case, strap, dial and markers produce a near-monochrome surface, with pale hands and small orange details preserving legibility. Small seconds at nine and the three-cell Multi-Mission Date at three give the simple face an unusual technical symmetry.

The bio-based resin case measures 46.7 × 44.5 × 12.7 mm and weighs only 47 grams. Casio includes the magnetically attached Shock Release minute hand, a 30-minute stopwatch, full calendar to 2099, hand shift and seconds-hand sleep functions. Mineral glass, amber LED lighting and 200-metre water resistance make this the most traditional G-SHOCK proposition in the 2500 family.

At a glance
| Reference | GAC-2500-1A |
|---|---|
| Case | 46.7 × 44.5 × 12.7 mm; bio-based resin |
| Weight | 47 g |
| Band | Bio-based resin |
| Display | Analog; small seconds; Multi-Mission Date |
| Water resistance | 200 m |
| Battery | Approximately 2 years on CR1025 |