Full-metal G-SHOCK arrived in 2018. Since then, 7 years have passed.
Full-metal G-SHOCK continues to evolve.
The latest GMW-B5000BT-1／GM-B2100BT-1A／GMC-B2100BT-1A models have arrived.
Combining square and octagonal bezels with black IP and silver, they maximize presence through monochrome contrast.
They feature Tough Solar and Bluetooth (the 5000 also supports radio-controlled timekeeping), and production takes place at Yamagata Casio.
Here are 3 interpretations of black.
Square and Octagonal Origins, Sharpened in Black
G-SHOCK's signature square and octagon.
The 2 lineages come together again in full-metal black.
The latest 2025 releases:
"GMW-B5000BT-1""GM-B2100BT-1A""GMC-B2100BT-1A",
all adopt a glossy black top bezel with an octagonal shape.
The monochrome contrast with silver
creates a presence almost as if a solid block of metal had come to life.
🔹GMW-B5000BT-1: An Evolution of the Original 5000 Family
The fully realized Origin, inheriting the DNA of the first DW-5000C.
Its standout feature is a mirror-polished top bezel and silver vapor-deposited glass.
The appeal is its intricate sparkle, as though light resides within the stainless steel.
Even with the substantial feel of full metal, its refined shine
fits naturally into business attire.
Furthermore, only this model has
- ✅ Multi Band 6 radio-controlled timekeeping
- ✅ Bluetooth Mobile Link
- ✅ Tough Solar power
all together.
Its blend of accuracy and convenience makes it a truly full-featured Origin.
It is manufactured at Yamagata Casio.
The dimpled stainless steel band also has an impressive finish, delivering industrial beauty that I would rate above a mechanical watch.
The beauty of machining on a metal G-SHOCK can only truly be appreciated by someone who wears it.
Where to Buy the Casio GMW-B5000BT-1
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Decoding GMW-B5000BT-1
GMW👉 Full-metal G-SHOCK designation: GM signifies metal, while GW signifies solar power and radio-controlled timekeeping
B👉 Bluetooth-equipped
5000👉 5000 series
BT👉 The name of this particular series
1👉 Base color
▶The Basics of CASIO G-SHOCK Model Numbers: Meaning and How to Read Them, DW vs. GW
The base model is the GMW-B5000D.
It made a huge impact as a full-metal G-SHOCK and still stands at the top of the square G-SHOCK range.
Where to Buy the Casio GMW-B5000D-1
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🔹GM-B2100BT-1A: A Sharper Look for the Popular Analog-Digital Octagon
The globally popular CasiOak, the 2100 series,
receives a full-metal analog-digital model.
The top bezel has a hairline finish, and
its understated texture pairs beautifully with black.
The hour markers also receive silver vapor deposition,
improving legibility through contrast with the dial.
Mobile Link allows smartphone-based time adjustment and
one-tap World Time settings.
Despite its simplicity, it could be called the definitive modern G-SHOCK.
Where to Buy the Casio GM-B2100BT-1A
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Decoding GM-B2100BT-1A
GM👉 Metal-covered model designation; without W, it has no radio-controlled timekeeping
B👉 Bluetooth-equipped
2100👉 2100 series, nicknamed CasiOak
BT👉 The name of this particular series
1A👉 Base color plus black
▶The Basics of CASIO G-SHOCK Model Numbers: Meaning and How to Read Them, DW vs. GW
The base model is the GM-B2100D.
It is a dream combination of the 2100 series and full metal.
Where to Buy the Casio GM-B2100SD-1A
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🔹GMC-B2100BT-1A: Premium Quality Highlighted by an All-Analog Display
A higher-end, all-analog model in the 2100 family.
It also has a hairline-finished bezel,
with a design that highlights the dial's raised hour markers.
A newly structured movement dedicated to an analog display
delivers a premium face while keeping thickness down.
Within this series, it alone takes a premium direction for a mature wrist.
It also looks excellent with suits and jackets.
Where to Buy the Casio GMC-B2100BT-1A
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Decoding GMC-B2100BT-1A
GMC👉 All-analog, full-metal 2100-family designation
B👉 Bluetooth-equipped
2100👉 2100 series
BT👉 The name of this particular series
1A👉 Base color plus black
▶The Basics of CASIO G-SHOCK Model Numbers: Meaning and How to Read Them, DW/GW/GM/GMW
The base model is the GMC-B2100.
It has become popular as an all-analog 2100.
Where to Buy the Casio GMC-B2100D-1A
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🔹3 Shared Points of Evolution
These 3 watches embody metallic beauty from every angle.
Mirror polish and radio-controlled refinement (5000) / sharp hairline finish and analog-digital display (2100) / analog elegance (GMC). Your choice of black sets the tone for today's style.
① The Beauty of Metal and Black Together
Rather than black paint, it uses a deep black IP treatment layered over the stainless steel.
The subdued gleam changes with the angle of the light—truly metallic art.
② Bluetooth and Tough Solar
Smartphone connectivity provides automatic time adjustment, while light handles charging.
Outstanding convenience: no battery replacement or manual time setting.
③ Made by Yamagata Casio
Production takes place at Casio's mother factory, which handles its premium lines.
Craftsmanship and robotics come together throughout polishing, assembly, and inspection.
Ownership satisfaction is on another level.
🔹Series Comparison Table
| Model | Power system | Design finish | Functions | Price, including tax |
|---|---|---|---|---|
| GMW-B5000BT-1 | Tough Solar + radio-controlled timekeeping + Bluetooth | Mirror polish + silver vapor-deposited glass | Multi Band 6 Mobile Link | ¥88,000 |
| GM-B2100BT-1A | They feature Tough Solar and Bluetooth | Hairline finish + silver hour markers | Mobile Link Analog-digital | ¥88,000 |
| GMC-B2100BT-1A | They feature Tough Solar and Bluetooth | Hairline finish + raised hour markers | Mobile Link All-analog | ¥107,800 |
🔹Which Model Should You Choose?
- For Classic Style → GMW-B5000BT-1
→ The fully realized Origin carrying on the first model's heritage. Choose this if you are unsure. - For Trends and Functions → GM-B2100BT-1A
→ The best-balanced CasiOak-family option, sure to be popular. - For Mature Refinement → GMC-B2100BT-1A
→ For those seeking a premium analog feel.
🔹Conclusion: A New G-SHOCK Peak, Expressed in Black
Metal signifies toughness; black signifies identity.
These 3 models master both,
and can fairly be called the culmination of 40 years of G-SHOCK.
With smartphone connectivity and solar charging,
there is no compromise in the evolution inside either.
And from every angle, the metalwork looks fully realized.
The choice is not simply which G-SHOCK to wear,
but which expression of black belongs on your wrist.
🔹Purchase Links
Popularity is rising quickly, so watch out for items selling out.
Where to Buy the Casio GMW-B5000BT-1
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Where to Buy the Casio GM-B2100BT-1A
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Where to Buy the Casio GMC-B2100BT-1A
Affiliate links — we may earn a commission.
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