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- 12%
G-Shock GMB2100PC-1A Full Metal Watch
G-Shock GMB2100PC-1A Full Metal Watch
G-Shock GMB2100PC-1A Full Metal Watch
G-Shock GMB2100PC-1A Full Metal Watch
G-Shock GMB2100PC-1A Full Metal Watch
G-Shock GMB2100PC-1A Full Metal Watch

G-Shock GMB2100PC-1A Full Metal Watch

(3,715 reviews)

G-Shock GMB2100PC-1A Full Metal Watch

$613.86

(3,715 reviews)

The Casio GM-2100-1A G-Shock Metal Covered wristwatch combines a stainless steel case with a durable black plastic strap, offering a resilient men's watch. It features an analog-digital display with a gray dial, luminous hands and indices for better visibility in low light conditions, as well as a mineral glass for scratch resistance. Key functions include world time, a 1/100-second stopwatch, countdown timer, fully automatic calendar with day and date display, hourly time signal, and dual LED lighting. With a water resistance of 200 meters, it is suitable for swimming and snorkeling. The case measures approximately 44 mm in diameter and 12 mm in thickness, with a band width of 16 mm, and features a screw-down case back and a pin buckle for secure comfort. This model emphasizes reliability and practicality under demanding conditions.

The Casio GM-2100-1A G-Shock Metal Covered wristwatch combines a stainless steel case with a durable black plastic strap, offering a resilient men's watch. It features an analog-digital display with a gray dial, luminous hands and indices for better visibility in low light conditions, as well as a mineral glass for scratch resistance. Key functions include world time, a 1/100-second stopwatch, countdown timer, fully automatic calendar with day and date display, hourly time signal, and dual LED lighting. With a water resistance of 200 meters, it is suitable for swimming and snorkeling. The case measures approximately 44 mm in diameter and 12 mm in thickness, with a band width of 16 mm, and features a screw-down case back and a pin buckle for secure comfort. This model emphasizes reliability and practicality under demanding conditions.

The Casio GM-2100-1A G-Shock Metal Covered wristwatch combines a stainless steel case with a durable black plastic strap, offering a resilient men's watch. It features an analog-digital display with a gray dial, luminous hands and indices for better visibility in low light conditions, as well as a mineral glass for scratch resistance. Key functions include world time, a 1/100-second stopwatch, countdown timer, fully automatic calendar with day and date display, hourly time signal, and dual LED lighting. With a water resistance of 200 meters, it is suitable for swimming and snorkeling. The case measures approximately 44 mm in diameter and 12 mm in thickness, with a band width of 16 mm, and features a screw-down case back and a pin buckle for secure comfort. This model emphasizes reliability and practicality under demanding conditions.

The Casio GM-2100-1A G-Shock Metal Covered wristwatch combines a stainless steel case with a durable black plastic strap, offering a resilient men's watch. It features an analog-digital display with a gray dial, luminous hands and indices for better visibility in low light conditions, as well as a mineral glass for scratch resistance. Key functions include world time, a 1/100-second stopwatch, countdown timer, fully automatic calendar with day and date display, hourly time signal, and dual LED lighting. With a water resistance of 200 meters, it is suitable for swimming and snorkeling. The case measures approximately 44 mm in diameter and 12 mm in thickness, with a band width of 16 mm, and features a screw-down case back and a pin buckle for secure comfort. This model emphasizes reliability and practicality under demanding conditions.

$613.86 - $1,138.40

in 40 offers

The lowest price for G-Shock GMB2100PC-1A Full Metal Watch right now is $613.86 at eBay.com.au, compared across 16 retailers.

The all-time low was $531.00 on 15 July 2025 — today's price is 16% above the lowest ever. That's a little above the best price we've seen.

Prices last updated 15 Aug 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 15/08/2026 04:14:44

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
eBay.com.au

$613.86

Casio G-shock Gm-b2100pc-1ajf Men's Solar Analog-digital Watch

Free delivery

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.com.au

$702.47

Casio G-shock Gm-b2100pc-1ajf Full Metal Bluetooth Solar Watch From

Free delivery

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.com.au

$735.08

[near Mint] Casio G-shock Gm-b2100pc-1ajf Bluetooth Analog Solar Men's

Free delivery

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.com.au

$767.89

[used Excellent] Casio G-shock Gm-b2100pc-1ajf Full Metal Solar

Delivery $23.31

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.com.au

$780.46

[used Excellent] Casio G-shock Gm-b2100pc-1ajf Full Metal Solar

Delivery $47.03

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.com.au

$859.16

Casio G-shock Full Metal Watch Gm-b2100pc-1ajf Black Men's

Delivery $4.71

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.com.au

$900.90

Casio G-shock Gm-b2100pc-1ajf Black Solar Used Watch

Free delivery

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.com.au

$907.42

Casio G-shock Full Metal Gm-b2100pc-1ajf Watch Black Solar Men's From

Delivery $31.16

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.com.au

$923.11

Casio G-shock Gm-b2100pc-1ajf Metal Rainbow Silver Men's Watch - Fast

Free delivery

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.com.au

$927.79

Casio G-shock Full Metal Gm-b2100pc-1ajf Watch Black Men's Used From

Delivery $31.07

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!

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

Amazing
23 June 2023Miguel M.

originally posted on g-shock.co.uk

I bought this metal Casio a few weeks ago. It is just beautiful. The dial is surprisingly easy to read, and the ToughSolar works like a charm. The bracelet is very easy to fit straight out of the box with a typical SIM pin.This watch is just beautiful

Finally got it!
4 December 2022Ian D.

originally posted on g-shock.co.uk

Finally got my 'Casio grail' - I already own (and love!) the resin version of this but wanted the luxury feel of the full metal model. Managed to try one on in H Samuel and the very patient sales lady spent ages with me ensuring I was happy with the fit. In fact, despite being a large watch, it's actually more comfortable on the wrist than my resin version (which surprised me). The fit and finish is superb as is the high quality bracelet with a milled clasp and plenty of micro adjustment. The only (slight) negative is it can be hard to read in certain lights but it does have decent lume (including the indices on this model) and a good double LED light. Pairs easily with the app, adding a second watch was easy enough and it synched perfectly with it. This will be my ... MoreFinally got my 'Casio grail' - I already own (and love!) the resin version of this but wanted the luxury feel of the full metal model. Managed to try one on in H Samuel and the very patient sales lady spent ages with me ensuring I was happy with the fit. In fact, despite being a large watch, it's actually more comfortable on the wrist than my resin version (which surprised me). The fit and finish is superb as is the high quality bracelet with a milled clasp and plenty of micro adjustment. The only (slight) negative is it can be hard to read in certain lights but it does have decent lume (including the indices on this model) and a good double LED light. Pairs easily with the app, adding a second watch was easy enough and it synched perfectly with it. This will be my Christmas present off my Dad and I'm so happy to end 2022 with this iconic watch on my wrist!

GM-B2100D-1AER
30 March 2023DURGA K.

originally posted on g-shock.co.uk

In my opinion certainly this is beautiful well crafted watchBut there is a big problem with the watch design -can not see hand and indices and it is dark you can't see time which is most important thing for any watch to read the time and that is whole and main purpose of the any watch and one of the fundamental horological watch making principlesDesigner like headless checked made a huge mistake by making watch look like a dark faced smart watchWhat an idiotic design!I am in the process of writing to top executives at Casio in Japan about thisWasted my time and caused me lot of inconvenienceFelt sorry to return this watch

Specification

Band TypeStainless Steel
ConstructionShock Resistant
Surface treatmentNeobrite

Price comparison

Updated 2 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
eBay.com.au

$613.86

Casio G-shock Gm-b2100pc-1ajf Men's Solar Analog-digital Watch

Free delivery

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.com.au

$702.47

Casio G-shock Gm-b2100pc-1ajf Full Metal Bluetooth Solar Watch From

Free delivery

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.com.au

$735.08

[near Mint] Casio G-shock Gm-b2100pc-1ajf Bluetooth Analog Solar Men's

Free delivery

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.com.au

$767.89

[used Excellent] Casio G-shock Gm-b2100pc-1ajf Full Metal Solar

Delivery $23.31

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.com.au

$780.46

[used Excellent] Casio G-shock Gm-b2100pc-1ajf Full Metal Solar

Delivery $47.03

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!

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

Amazing
23 June 2023

I bought this metal Casio a few weeks ago. It is just beautiful. The dial is surprisingly easy to read, and the ToughSolar works like a charm. The bracelet is very easy to fit straight out of the box with a typical SIM pin.This watch is just beautiful

Miguel M. originally posted on g-shock.co.uk
Finally got it!
4 December 2022

Finally got my 'Casio grail' - I already own (and love!) the resin version of this but wanted the luxury feel of the full metal model. Managed to try one on in H Samuel and the very patient sales lady spent ages with me ensuring I was happy with the fit. In fact, despite being a large watch, it's actually more comfortable on the wrist than my resin version (which surprised me). The fit and finish is superb as is the high quality bracelet with a milled clasp and plenty of micro adjustment. The only (slight) negative is it can be hard to read in certain lights but it does have decent lume (including the indices on this model) and a good double LED light. Pairs easily with the app, adding a second watch was easy enough and it synched perfectly with it. This will be my ... MoreFinally got my 'Casio grail' - I already own (and love!) the resin version of this but wanted the luxury feel of the full metal model. Managed to try one on in H Samuel and the very patient sales lady spent ages with me ensuring I was happy with the fit. In fact, despite being a large watch, it's actually more comfortable on the wrist than my resin version (which surprised me). The fit and finish is superb as is the high quality bracelet with a milled clasp and plenty of micro adjustment. The only (slight) negative is it can be hard to read in certain lights but it does have decent lume (including the indices on this model) and a good double LED light. Pairs easily with the app, adding a second watch was easy enough and it synched perfectly with it. This will be my Christmas present off my Dad and I'm so happy to end 2022 with this iconic watch on my wrist!

Ian D. originally posted on g-shock.co.uk
GM-B2100D-1AER
30 March 2023

In my opinion certainly this is beautiful well crafted watchBut there is a big problem with the watch design -can not see hand and indices and it is dark you can't see time which is most important thing for any watch to read the time and that is whole and main purpose of the any watch and one of the fundamental horological watch making principlesDesigner like headless checked made a huge mistake by making watch look like a dark faced smart watchWhat an idiotic design!I am in the process of writing to top executives at Casio in Japan about thisWasted my time and caused me lot of inconvenienceFelt sorry to return this watch

DURGA K. originally posted on g-shock.co.uk
Good finish & quality, poor dial colour
7 October 2022

Good quality and good looking watch.Quick transaction and delivery.Cons:The dial and hands are too dark which make it difficult to read the time.Suggestion:It would be nice if Casio produce this metal models with brighter and maybe colourful dials.

Hamid G. originally posted on g-shock.co.uk
Great watch. Poor software.
8 October 2022

The watch itself is excellent, well designed and beautifully finished. The mobile phone connection is a different matter, this model of watch is not listed and consequently the watch is not automatically updated meaning l have to spend time doing it manually. Hopefully this will be fixed soon as it is a new model of watch.

Ed M. originally posted on g-shock.co.uk
It's OK ISH.
6 October 2022

My first g shock, and I've mixed feelings.GoodAll metalGreat looks and feel on the wristGreat functions (see bad)BadPoor legality in anything but bright daylight.Awfull app takes 3 to 4 attempts to connect.On balance its OK but would need to be convinced to get another g shock.

Philip E. originally posted on g-shock.co.uk
More than I could have expected
17 August 2023

The watch feels like us should for the the price I’d even say it feels more premium than the price. The metal is brushed perfectly and feels nice and robust. The look is pretty versatile and can suit both casual and more dressed up looks.

Michael R. originally posted on g-shock.co.uk
Poor
23 February 2024

Purchased on of these and even after leaving the watch on the windowsill for a week it did not get to full charge but the most annoying thing was that the hands and baton marker were totally invisible in a dark room. They weren’t particularly visible in daylight either. VERY DISAPPOINTED! As sending the watch back to the supplier.

Keith B. originally posted on g-shock.co.uk
Well built watch, poor dial legibility
31 March 2023

Well built, like all G-Shock watches. The only downside is the dial’s less than ideal legibility, especially in poor lighting conditions. I assume the design concept was “stealth”, however, the rest of the watch is far from “stealthy”. The polishing methods used make the bracelet and case visible from afar. Considering this, the dial could’ve used some more contrast. Perhaps something as simple as white hands and markers.

Ovidiu D. originally posted on g-shock.co.uk
gshock - the tough and ruggedly good looking
5 June 2023

The all steel dark casioak moves more in the direction of good looks than absolute practicality for the following reasons; not so great legibility in poor lighting conditions, you'll need to use the lighting button to get a reading, ditto the digital display. But this is the stealthy version of the more blingy models and I was prepared for that compromise - very happy. The price at watch direct was the best for the oz market, so a great buy.

Steven T. originally posted on watchdirect.com.au

Specification

Band TypeStainless Steel
ConstructionShock Resistant
Surface treatmentNeobrite

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