CasiOak Watches

Find G-Shock CasiOak watches online at Watch Direct Australia. Place your order online and pay later using Afterpay. Free Shipping Australia-wide!

Black G-Shock digital wristwatch with analog hands and a rugged design.

Black digital sports watch with a round face and textured rubber strap.

G-Shock "CasiOak" Octagon Carbon Core Guard Black

GA2100-1A1

45.4 mm

$169

$279

G-Shock CasiOak Carbon Core Guard Watch

GA2110SU-3A

48 mm

$169

$279

CasiOak G-Shock Men's Watch with Bluetooth and Tough Solar Power GAB2100-1A1

Black digital sports watch with a round face worn on a wrist.

G-Shock CasiOak Men's Watch with Bluetooth and Tough Solar Power

GAB2100-1A1

48.5 mm

$259

$329

G-Shock wristwatch with a silver metallic bezel and black band.

Silver and black wristwatch with a round face and metal bracelet.

G-Shock Metallic CasiOak Watch with Octagonal Design and Stainless Steel Bezel

GM2100-1A

44.4 mm

$299

$539

G-Shock CasiOak Virtual World Mens Watch

GA2100VB-1A

48.5 mm

$169

$279

Black G-Shock wristwatch with analog and digital display.

Black digital wristwatch with a rugged design and analog-style face.

G-Shock "CasiOak" Carbon Core Guard Black

GA2100-1A

48 mm

$169

$279

G-Shock CasiOak All White Watch

GA2100-7A7

48.5 mm

$215

$279

Black G-Shock watch with teal accents on the dial and digital display.

Black sports watch with green accents on the dial worn on a wrist.

G-Shock Digital Black Resin Band Men's Watch

GA2100RC-1A

48.5 mm

$214

$299

G-Shock CasiOak Luxe wristwatch with a black octagonal bezel and gold hour markers.

G-Shock "CasiOak" Luxe Black Gold Accent Ana-Digi

GA2100LXB-1A9

45.4 mm

$299

G-Shock Full Metal 2100 Series Stainless Steel Watch

GMB2100SD-1C

49.8 mm

$787

$1,199

G-Shock watch with a dark gray metallic case and digital-analog display.

Rugged black G-Shock digital wristwatch with a metallic finish.

G-Shock Solar CasiOak Steel Bluetooth

GMB2100BD-1A

44 mm

$829

$1,199

G-Shock Analog Digital DUO Garish Black Resin Band Watch

GA2100GB-1A

48.5 mm

$219

$329

G-Shock CasiOak Luxe wristwatch with a black metal bezel and gold dial accents.

G-Shock "CasiOak" Luxe Black Gold Accent Metal

GM2100LXB-1A9

44.4 mm

$569

G-Shock Slim CasiOak Black With Green Markers Watch

GMAP2100SA-1A2

40.2 mm

$219

$279

G-Shock Slim CasiOak Black With Red Markers Watch

GMAP2100SA-1A1

40.2 mm

$230

$279

G-Shock Analog Digital Camouflage Resin Band Black Dial Watch

GA2100CM-5A

45.4 mm

$299

Casio G-Shock Mini CasiOak Women's Watch

GMAS2100GA-7A

42.9 mm

$159

$259

G-Shock Analog Digital 2100 Series Transparent Resin Band Watch

GA2100BM-7A5

48.5 mm

$299

G-Shock Analog Digital Camouflage Resin Band and Dial Watch

GA2100CMD-8A

45.4 mm

$229

$299

G-Shock Analog Digital Black Resin Band Watch

GA2100RL-1A

45.4 mm

$189

$279

G-Shock CasiOak Metal

GM2100B-3A

48 mm

$429

$569

G-Shock Analog Digital Smokey Black Resin Band Neon Blue Accents Watch

GA2100K-1A

45.4 mm

$199

$279

G-Shock CasiOak Luxe wristwatch with a black octagonal bezel and black resin band.

G-Shock "CasiOak" Luxe Black Ana-Digi Resin

GA2100LXB-1A

45.4 mm

$299

G-Shock Slim CasiOak Digital Transparent Black Green Dial Watch

GMAP2100SR-1A

40.2 mm

$279

G-Shock Analog Digital 2100 Series Blue Dial Navy Blue Resin Band Watch

GA2100AS-2A

48.5 mm

$239

$299

G-Shock Full Metal Stainless Steel Watch

GMB2100AD-5A

49.8 mm

$787

G-Shock Solar CasiOak Silver and Black Full Metal Bluetooth

GMB2100BT-1A

44 mm

$1,099

G-Shock Analog Digital Smokey Brown Resin Band Orange Orange

GA2100K-5A

45.4 mm

$279

G-Shock CasiOak Ladies Pink

GMAP2100-4A

46 mm

$179

$259

G-Shock Analog Digital DUO Aim High Purple Resin Band Watch

GA2100AH-6A

48.5 mm

$219

$299

G-Shock Analog Digital Camouflage Resin Band and Black Dial Watch

GA2100CM-8A

45.4 mm

$279

Sold out

G-Shock Transparent CasiOak Carbon Core Guard Watch

GA2100SKE-7A

48 mm

$179

$289

Sold out

Red G-Shock digital wristwatch with analog hands and a chunky design.

Bright red digital wristwatch with a sporty design.

G-Shock Casio Red Carbon Core Guard

GA2100-4A

48 mm

$199

$279

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G-Shock Slim CasiOak Digital Transparent Pink Dial Watch

GMAP2100SR-7A

40.2 mm

$212

$279

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G-Shock Slim CasiOak Digital Blue Watch

GMAP2100M-2A

40.2 mm

$209

$259

Sold out

G-Shock Analog Digital DUO Gradation Yellow Resin Band Watch

GA2100-9A9

48.5 mm

$219

$279

Sold out

G-Shock Analog Digital Neon Orange Accents Watch

GA2100K-2A

45.4 mm

$165

$279

Sold out

Gray G-Shock digital wristwatch with an octagonal face and protective bezel.

Wristwatch with a black face and strap worn on a person’s wrist.

G-Shock CasiOak Face Protector

GA2100PTS-8A

48 mm

$226

$329

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Silver G-Shock wristwatch with a black dial and digital-analog display.

Metallic wristwatch surrounded by shattered ice fragments.

G-Shock Solar CasiOak Steel Bluetooth

GMB2100D-1A

44 mm

$849

$1,099

Sold out

Gold-colored G-Shock wristwatch with a black dial face.

Gold-toned wristwatch with a dark face and digital display.

G-Shock Full Metal Gold CasiOak

GMB2100GD-9A

44 mm

$792

$1,199

Sold out

G-Shock CasiOak Luxe wristwatch with a black metal octagonal bezel and black resin band.

G-Shock "CasiOak" Luxe Black Metal Bezel Ana-Digi

GM2100LXB-1A

44.4 mm

$569

Sold out

Black G-Shock wristwatch with blue accents on the dial.

G-Shock Digital Black Resin Band Watch

GA2100-1A2

48.5 mm

$199

$279

Sold out

G-Shock digital-analog wristwatch with a black case and strap.

Black digital wristwatch with a round face and fabric strap.

G-Shock CasiOak DUO Utility Collection

GM2100CB-1A

49.3 mm

$419

$599

Sold out

G-Shock Full Metal Stainless Steel Watch GMB2100AD-2A

GMB2100AD-2AD

49.8 mm

$799

$1,149

Sold out

G-Shock Analog Digital DUO Gradation Blue Resin Band Watch

GA2100-2A2

48.5 mm

$219

$279

Sold out

G-Shock Digital Analog White Resin Band Watch

GA2100AS-5A

48.5 mm

$179

$299

Sold out

G-Shock Slim CasiOak Digital Black Watch

GMAP2100BB-1A

46 mm

$209

$259

Sold out

Casio G-Shock Mini CasiOak Women's Watch

GMAS2100GA-1A

42.9 mm

$159

$259

About CasiOak Watches

Shop CasiOak watches in Australia — the G-Shock GA-2100 and GA-B2100 series with the iconic octagonal bezel that earned the "CasiOak" nickname. Authorised Casio dealer, free shipping Australia-wide.

What Is a CasiOak?

The "CasiOak" is the nickname given to Casio's G-Shock GA-2100 series, coined by watch enthusiasts for its octagonal bezel that draws comparisons to certain Swiss luxury sports watches — at a fraction of the price. The GA-2100 launched in 2019 and quickly became one of G-Shock's most popular models globally. It features a slim Carbon Core Guard case, analogue-digital display, 200m water resistance, and G-Shock's signature shock resistance. Watch Direct is an authorised Casio dealer in Australia stocking current CasiOak models.

CasiOak Models at Watch Direct

GA-2100 Series: The original CasiOak. Slim Carbon Core Guard resin case, analogue-digital display, 200m water resistance. Available in a wide range of colourways.

GA-B2100 Series: The Bluetooth-connected CasiOak. Adds G-Shock Move app connectivity for time sync and step tracking while keeping the same iconic octagonal case profile.

Limited Editions: Casio regularly releases limited CasiOak colourways including collaborations and special editions. Check back regularly for new arrivals.

Why Choose a CasiOak?

The CasiOak delivers G-Shock durability — 200m water resistance, 10-year battery, shock and magnetic resistance — in a slimmer, more refined profile than traditional G-Shock models. The octagonal case design works equally well with casual and smart-casual outfits. At $149–$299, it's one of the best-value tool watches available.

Frequently asked questions

What is a CasiOak watch?

CasiOak is the enthusiast nickname for the Casio G-Shock GA-2100 series, named for its octagonal bezel. It features a slim Carbon Core Guard case, analogue-digital display, and 200m water resistance.

Is the CasiOak a real Casio model?

Yes. The CasiOak is the Casio G-Shock GA-2100 and GA-B2100 — officially released Casio models. 'CasiOak' is a fan-given nickname.

What is the difference between the GA-2100 and GA-B2100?

The GA-B2100 adds Bluetooth connectivity via the G-Shock Move app. Both share the same octagonal Carbon Core Guard case and 200m water resistance.

Does Watch Direct stock CasiOak in Australia?

Yes. Watch Direct is an authorised Casio dealer in Australia, stocking the GA-2100 and GA-B2100 CasiOak range with free shipping Australia-wide.