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Wear it more often, wear it forever: Octagonal form in simple colours

Introducing a streamlined octagonal form complemented by a monochromatic colour scheme.
The matte finish combined with smoky colours produces a versatile, simple look that goes well with any style.



Basic colours

The monochromatic design extends across the case, band, and dial, all finished in the same colour. Trendy smoky colours in a matte finish complement your fashion by adding an accent to your outfit.

Octagonal form

Inheriting the concept of the very first G-SHOCK, these watches feature a streamlined minimalist design. The flat face and bar indexes create a simple yet solid impression.

Slim, compact

These watches retain the tough construction of the original GA-2100, but in a compact size that also fits comfortably on smaller wrists. The slim design and flat watch face project a streamlined, comfortable look and feel.

Super Illuminator (high-brightness double LED light) for readability in the dark.

※Image shows the GMA-S2100BA-2A1.


  • Shock-resistant structure
  • 20-bar water resistance
  • Hand shift feature
  • World time (48 cities)
  • 1/100-second stopwatch
  • Countdown timer
  • 5 daily alarms
  • Double LED light(Super Illuminator)

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