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Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER
Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER

Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER

(3,401 reviews)

With Bluetooth connectivity and a solar charging system, the new shock-resistant watch take the iconic 2100 series to a whole other level. Tough Solar charging system effectively converts any light source to power the watch, eliminating the need to replace the battery, and Smartphone pairing delivers accurate timekeeping. Combining a Carbon Core Guard structure, protecting the module and providing shock resistance and a compact case. G-SHOCK classic colours first used in G-SHOCK 5600 models enables you to wear the latest, greatest G-SHOCK has to offer. Featuring black styling and white LCD.

With Bluetooth connectivity and a solar charging system, the new shock-resistant watch take the iconic 2100 series to a whole other level. Tough Solar charging system effectively converts any light source to power the watch, eliminating the need to replace the battery, and Smartphone pairing delivers accurate timekeeping. Combining a Carbon Core Guard structure, protecting the module and providing shock resistance and a compact case. G-SHOCK classic colours first used in G-SHOCK 5600 models enables you to wear the latest, greatest G-SHOCK has to offer. Featuring black styling and white LCD.

$126.00 - $356.73

in 93 offers

Colour:

G-Shock GA-B2100-1A1ER Watch Black
G-Shock GA-B2100-2AER Watch Blue
G-Shock GA-B2100-3AER Watch Green
Casio G-Shock GA-B2100-1A
Casio - Watch - Men - Solar - G-Shock - GA-B2100C-9AER

Casio - Watch - Men - Solar - G-Shock - GA-B2100-1AER

$126.00

(3,401 reviews)

With Bluetooth connectivity and a solar charging system, the new shock-resistant watch take the iconic 2100 series to a whole other level. Tough Solar charging system effectively converts any light source to power the watch, eliminating the need to replace the battery, and Smartphone pairing delivers accurate timekeeping. Combining a Carbon Core Guard structure, protecting the module and providing shock resistance and a compact case. G-SHOCK classic colours first used in G-SHOCK 5600 models enables you to wear the latest, greatest G-SHOCK has to offer. Featuring black styling and white LCD.

With Bluetooth connectivity and a solar charging system, the new shock-resistant watch take the iconic 2100 series to a whole other level. Tough Solar charging system effectively converts any light source to power the watch, eliminating the need to replace the battery, and Smartphone pairing delivers accurate timekeeping. Combining a Carbon Core Guard structure, protecting the module and providing shock resistance and a compact case. G-SHOCK classic colours first used in G-SHOCK 5600 models enables you to wear the latest, greatest G-SHOCK has to offer. Featuring black styling and white LCD.

Colour:
G-Shock GA-B2100-1A1ER Watch Black
G-Shock GA-B2100-2AER Watch Blue
G-Shock GA-B2100-3AER Watch Green
Casio G-Shock GA-B2100-1A
Casio - Watch - Men - Solar - G-Shock - GA-B2100C-9AER

Price comparison

Last updated at 25/10/2025 15:05:26

Amazon.com.au

$171.99

Go to store


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H S Johnson

$138.00

available 1 day ago

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GadgetiCloud

$139.00

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Reebelo Australia

$142.10

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Relojesdemoda.com

$143.01

available 1 day ago

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CreationWatches.com

$147.38

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eBay - h.s.johnson

$149.25

available 1 day ago

Low stock


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DownUnderWatches.com

$154.00

Go to store

Bogart's Jewellers

$156.00

Go to store

eBay - caswatchw7

$157.33

Go to store


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See 35 more history offers

fas-bee.com

$1,716.17

available 14 days ago

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Vincent Watch

$242.00

available 14 days ago

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Loaded

$307.73

available 14 days ago

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Joom

$450.32

available 14 days ago

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Timing Is Everything

$429.00

available 14 days ago

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Watchello

$253.00

available 14 days ago

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Red Wrappings

$1,299.90

available 14 days ago

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i-Watch

$315.74

available 14 days ago

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Christies Jewellery & Watches

$218.93

available 14 days ago

Low stock

Hoskings Jewellers

$209.00

available 15 days ago

Low stock

Time+Tide

$279.00

available 15 days ago

Low stock

ASOS

$148.50

available 15 days ago

Low stock


shopback

Up to 3.6% Cashback

eBay - store_in_japan4

$377.29

available 15 days ago

Low stock


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Cash Converters

$185.00

available 15 days ago

Low stock

My Jewellers

$279.00

available 15 days ago

Low stock

By San Sebastian

$279.00

available 15 days ago

Low stock

eBay - ururu2019

$530.06

available 15 days ago

Low stock


Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay - daisukejapan888

$375.31

available 15 days ago

Low stock


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eBay - goldumnyc

$7,157.14

available 16 days ago

Low stock


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eBay - japantreasures2000

$548.88

available 24 days ago

Low stock


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MyDeal

$222.52

available 24 days ago

Low stock


shopback

Up to 3.6% Cashback

eBay - plainflour

$578.30

available 24 days ago

Low stock


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eBay - sakura_store43

$668.47

available 24 days ago

Low stock


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Jomashop.com

$188.84

available 24 days ago

Low stock


japan-select

$264.37

available 24 days ago

Low stock

Ramesh Watch Company

$183.84

available 24 days ago

Low stock

Fawaah.com

$217.12

available 24 days ago

Low stock

Nicols Jewelry

$228.04

available 24 days ago

Low stock

Amazon

$228.50

available 27 days ago

Low stock


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eBay - jpfactoryjp

$1,427.49

available 27 days ago

Low stock


Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay - the-4wd-depot

$375.12

available 27 days ago

Low stock


Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

fashemco.com

$367.95

available about 1 month ago

Low stock

Fruugo Australia

$369.00

available about 1 month ago

Low stock

au.ShopBetter24.com

$224.00

available 2 months ago

Low stock

PrettyNetty.com

$225.00

available 2 months ago

Low stock

Price history

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​

Price history

​
​

Reviews

A typical Casio beauty
31 October 2022
Tim O.

originally posted on g-shock.co.uk

Bluetooth + Tough Solar vs British Winter?
9 January 2023
Fred F.

originally posted on g-shock.co.uk

Casio GA-B2100 - The "B" is for BANANA!
16 February 2023
CLARK R.

originally posted on g-shock.co.uk

Specification

Diameter45.4 mm
Water Resistance20 Bar (Dive)
WarrantyManufacturer
Timehours - Digital - Analogue hand
CalendarDate - Digital

Price comparison

Updated about 10 hours ago
Amazon.com.au

$171.99

H S Johnson

$138.00

Low Stock
GadgetiCloud

$139.00

Reebelo Australia

$142.10

Relojesdemoda.com

$143.01

Low Stock

See 35 more history offers

fas-bee.com

$1,716.17

Low Stock
Vincent Watch

$242.00

Low Stock
Loaded

$307.73

Low Stock
Joom

$450.32

Low Stock
Timing Is Everything

$429.00

Low Stock
Watchello

$253.00

Low Stock
Red Wrappings

$1,299.90

Low Stock
i-Watch

$315.74

Low Stock
Christies Jewellery & Watches

$218.93

Low Stock
Hoskings Jewellers

$209.00

Low Stock
Time+Tide

$279.00

Low Stock
ASOS

$148.50

Low Stock

shopback

Up to 3.6% Cashback

eBay - store_in_japan4

$377.29

Low Stock
Cash Converters

$185.00

Low Stock
My Jewellers

$279.00

Low Stock
By San Sebastian

$279.00

Low Stock
eBay - ururu2019

$530.06

Low Stock
eBay - daisukejapan888

$375.31

Low Stock
eBay - goldumnyc

$7,157.14

Low Stock
eBay - japantreasures2000

$548.88

Low Stock
MyDeal

$222.52

Low Stock

shopback

Up to 3.6% Cashback

eBay - plainflour

$578.30

Low Stock
eBay - sakura_store43

$668.47

Low Stock
Jomashop.com

$188.84

Low Stock
japan-select

$264.37

Low Stock
Ramesh Watch Company

$183.84

Low Stock
Fawaah.com

$217.12

Low Stock
Nicols Jewelry

$228.04

Low Stock
Amazon

$228.50

Low Stock
eBay - jpfactoryjp

$1,427.49

Low Stock
eBay - the-4wd-depot

$375.12

Low Stock
fashemco.com

$367.95

Low Stock
Fruugo Australia

$369.00

Low Stock
au.ShopBetter24.com

$224.00

Low Stock
PrettyNetty.com

$225.00

Low Stock

Price history

​
​

Price history

​
​

Reviews

A typical Casio beauty
31 October 2022
Tim O.
originally posted on g-shock.co.uk
Bluetooth + Tough Solar vs British Winter?
9 January 2023
Fred F.
originally posted on g-shock.co.uk
Casio GA-B2100 - The "B" is for BANANA!
16 February 2023
CLARK R.
originally posted on g-shock.co.uk
Excellent everyday watch
15 November 2022
Gordon C.
originally posted on g-shock.co.uk
Great Liught Weight Slim Adventure Watch.
30 September 2022
Anthony S.
originally posted on g-shock.co.uk
It’s fine, but for the price it’s nowt special
20 January 2023
Simon H.
originally posted on g-shock.co.uk
Review Title
26 June 2023
Mark
originally posted on firstclasswatches.co.uk
Satisfied
25 September 2022
Robert G.
originally posted on g-shock.co.uk
Very cool with some flaws
1 August 2022
Chimpboy
originally posted on g-shock.co.uk
Why did it take me so long ?
21 September 2022
Paul N.
originally posted on g-shock.co.uk

Specification

Diameter45.4 mm
Water Resistance20 Bar (Dive)
WarrantyManufacturer
Timehours - Digital - Analogue hand
CalendarDate - Digital