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Generated illustration of the Casio G-Shock GA-2100 "CasiOak" GA-2100-1A1: octagonal case, 45.4 mm, black dial, octagonal bezel, resin strap.

Plate 113. Illustration generated from this record, not a photograph. No lettering or logos. Colours are approximate. Same scale on every plate.

a Bezel
octagonal, black
b Dial
black, markers: batons, with date
c Case
Carbon and resin, octagonal
d Strap
resin, black

Casio · Integrated sports

G-Shock GA-2100 "CasiOak"

Ref. GA-2100-1A1

Machine translation pending human review. Figures and sources match the original.

Its octagonal bezel earned it the nickname CasiOak for its resemblance to the Audemars Piguet Royal Oak, and its thin case rests on a carbon structure.

US$110

Official list price · Nov 2026 · Source: g-central.com

Official site

Why it matters

  • 11.8 mm thick thanks to Carbon Core Guard
  • Launched in Japan in August 2019
  • The bezel derives from the DW-5000 with a round dial, not a homage, according to G-Central
  • 51 g

Specifications

Line
G-Shock 2100 (CasiOak)
Year
2019
Status
In production
Range
Affordable
Diameter
45.4 mm
Thickness
11.8 mm
Material
Carbon and resin
Shape
octagonal
Dial
black
Markers
batons
Date
Yes
Bezel
octagonal, black
Strap
resin, black
Calibre
Módulo 5611
Movement
Quartz
Power reserve
unconfirmed
Frequency
unconfirmed
Jewels
unconfirmed
Water resistance
200 m
Complications
hours, minutes, seconds, date, stopwatch, alarm, world time, light

Across the Archive

Diameter45.4 mmAbove 96% of 391 watches with this figure
Thickness11.8 mmAbove 46% of 291 watches with this figure
Power reserveunconfirmed
Frequencyunconfirmed
Water resistance200 mAbove 72% of 336 watches with this figure
PriceUS$110 · Nov 2026Above 2% of 101 prices in USD. Log scale.

Where to buy

A search for this reference at retailers. TicTemple does not sell watches or check stock. Links go live once we join each programme.

Sources

  1. casio.com
  2. g-central.com
  3. g-central.com

Record confidence: high. Based on an official source. Anything unverified is shown as “unconfirmed”, never estimated.

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