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Black resin G-Shock watch with octagonal case and analog-digital display

CASIO

CASIO G-Shock GA-2100-1A1 Black watch

SKU CH-DHCZ-CMJ40

A slim 11.8 mm carbon-core G-Shock with analog-digital display, 200 m water resistance and mineral crystal

  • StyleSports
  • MaterialResin
  • MovementQuartz
  • ColorBlack
  • ShapeRound
  • Dial ColorBlack
  • Ultra-thin 11.8 mm profile enabled by carbon-fibre reinforced resin
  • Shock-resistant structure protects the module inside a carbon core guard case
  • 200 m water resistance suits serious aquatic activities
  • Analog-digital display combines traditional hands with digital readouts
  • Heritage octagon design traces back to the 1983 DW-5000C original

Thin carbon core guard

The CASIO G-Shock GA-2100-1A1 uses a carbon core guard structure that encloses the module in a carbon case. Fine resin embedded with carbon fibres gives the case outstanding strength and crack resistance while keeping it 11.8 mm thin. This makes it the thinnest G-Shock combination model available.

200-metre water resistance

The watch is rated for 200 metres of water resistance, suitable for professional marine activity and serious surface water sports. A mineral crystal protects the analog-digital display, and the fixed bezel sits on a resin case measuring 45.00 mm thick. Quartz movement powers the day and date functions.

Everyday wearers needing slim toughness

Buyers who want a lightweight, shock-resistant watch for daily use and water sports will find the thin profile and carbon-reinforced case practical. Those who require a larger case diameter, metal bracelet, or smartwatch connectivity should consider other models.

Highlights

  • Ultra-thin 11.8 mm profile enabled by carbon-fibre reinforced resin
  • Shock-resistant structure protects the module inside a carbon core guard case
  • 200 m water resistance suits serious aquatic activities
  • Analog-digital display combines traditional hands with digital readouts
  • Heritage octagon design traces back to the 1983 DW-5000C original

Specifications

BrandCASIO
StyleSports
MaterialResin
MovementQuartz
ColorBlack
ShapeRound
Dial ColorBlack
Dial MarkersIndex
DisplayAnalog and Digital
DateDate
Band MaterialResin
FastenerBuckle Clasp
GenderMale
ConditionNew
BezelFixed Bezel
Case MaterialResin
Case Thickness45.00 mm
CrystalMineral Crystal
Water-Resistant200m
Special FeaturesMineral Crystal,Buckle Clasp,Day and Date Display

Questions about this item

What does the 11.8 mm thickness mean for everyday wear?

The carbon-reinforced resin case is the thinnest in the G-Shock combination line, so it sits low on the wrist and slides under a shirt cuff easily.

What does the 200 m water-resistance rating allow in practice?

It is suitable for swimming, snorkelling and recreational diving, but not for saturation or professional deep diving.

What physical details determine whether the watch fits my wrist?

The case measures 45.00 mm across, the band is resin with a buckle clasp, and the profile is 11.8 mm thin.

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