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G-SHOCK Model Guide: GA-2100 vs GM-2100 vs GW-6900 vs DW-5600 vs GMW-B5000
Short answer
Choose the GA-2100 for a slim, light octagonal everyday watch (11.8 mm, 51 g); the GM-2100 for the same shape with a stainless steel bezel (72 g); the DW-5600 or GMW-B5000 for the classic square in resin (52 g) or full metal (167 g); and the GW-6900 for a bold, rounded three-window digital with solar power and atomic time.
The quick comparison
Every custom watch starts with a base model. The silhouette decides how it wears; the colorway decides how it feels. The table lists Casio's stock specifications; each model links to its full guide.
- GA-2100 — octagonal, analog-digital, slim and light. The “CasiOak”. Most versatile.
- GM-2100 — the GA-2100 shape with a metal-covered bezel. More weight, more shine.
- GW-6900 — rounded case with the three-window digital layout. Chunky and bold.
- DW-5600 — the square digital silhouette that traces back to the first G-SHOCK.
- GMW-B5000 — the square silhouette in a full metal case and bracelet. The dressiest option.
- GA-700 — a larger analog-digital case for maximum wrist presence.
| Model | Case (L × W × H) | Inches | Thickness | Weight | Size |
|---|---|---|---|---|---|
| GA-2100 | 48.5 × 45.4 × 11.8 mm | 1.91 × 1.79 × 0.46 in | 11.8 mm | 51 g (1.8 oz) | Medium |
| GM-2100 | 49.3 × 44.4 × 11.8 mm | 1.94 × 1.75 × 0.46 in | 11.8 mm | 72 g (2.5 oz) | Medium |
| GA-B2100 | 48.5 × 45.4 × 11.9 mm | 1.91 × 1.79 × 0.47 in | 11.9 mm | 52 g (1.8 oz) | Medium |
| GW-M5610 | 46.7 × 43.2 × 12.7 mm | 1.84 × 1.7 × 0.5 in | 12.7 mm | 51.7 g (1.8 oz) | Medium |
| GMW-B5000 | 49.3 × 43.2 × 13 mm | 1.94 × 1.7 × 0.51 in | 13 mm | 167 g (5.9 oz) | Medium |
| DW-5600 | 48.9 × 42.8 × 13.4 mm | 1.93 × 1.69 × 0.53 in | 13.4 mm | 52 g (1.8 oz) | Medium |
| GW-6900 | 53.2 × 50 × 17.7 mm | 2.09 × 1.97 × 0.7 in | 17.7 mm | 63 g (2.2 oz) | Medium |
| G-7900 | 52.4 × 50 × 17.7 mm | 2.06 × 1.97 × 0.7 in | 17.7 mm | 68.2 g (2.4 oz) | Medium |
| GA-700 | 57.5 × 53.4 × 18.4 mm | 2.26 × 2.1 × 0.72 in | 18.4 mm | 69 g (2.4 oz) | Large |
| GA-V01 | 49.1 × 58.2 × 19.6 mm | 1.93 × 2.29 × 0.77 in | 19.6 mm | 74 g (2.6 oz) | Large |
Which G-SHOCK is best for a small wrist?
Slimmer, lighter cases wear smaller. The GA-2100 and DW-5600 are the usual picks for smaller wrists, and Baby-G models are smaller still. Larger cases such as the GA-700 and GW-6900 suit medium to large wrists or anyone who wants a bold look.
Measure your wrist with our wrist size guide and send us the number — we will tell you how a specific listing should wear.
Which model is best for customization?
The GA-2100 family is the most customized G-SHOCK because its flat octagonal bezel is a clean canvas for paint, metal cases and moissanite bezels. The DW-5600 and GW-6900 are the classic choices for iced-out square and rounded looks.
FAQ
What is the most popular G-SHOCK to customize?
The octagonal GA-2100, nicknamed the CasiOak, is the most popular base for custom colorways, metal cases and moissanite bezels.
Is the GMW-B5000 heavier than the DW-5600?
Yes. The full-metal GMW-B5000 weighs 167 g against 52 g for the resin DW-5600, more than three times as much, according to Casio and G-Central specifications.