Comparison · Reviewed
GA-2100 vs GA-V01: Classic CasiOak or 2025 Sculpted Design?
Verdict
Choose the GA-2100 for a slim, proven octagonal everyday watch; choose the GA-V01 for a bold 2025 design and a 10-year battery, accepting a much larger case.
GA-2100 vs GA-V01 side by side
Casio's specifications for the stock GA-2100-1A1 and GA-V01-1A.
| GA-2100 | GA-V01 | |
|---|---|---|
| Display | Analog-digital | Analog-digital |
| Shape | Octagonal | Sculpted, angular case |
| Case size (L × W × H) | 48.5 × 45.4 × 11.8 mm | 49.1 × 58.2 × 19.6 mm |
| Thickness | 11.8 mm | 19.6 mm |
| Weight | 51 g (1.8 oz) | 74 g (2.6 oz) |
| Case | Carbon fiber–reinforced resin (Carbon Core Guard) | Resin |
| Water resistance | 200 m / 20 bar | 200 m / 20 bar |
| Power | Battery: SR726W × 2, about 3 years | Battery: CR2025, about 10 years |
| Tough Solar | No | No |
| Multi-Band 6 | No | No |
| Bluetooth | No | No |
| Module | 5611 | 5751 |
| Launched | 2019 | 2025 |
| Casio U.S. list price | $110 | $155 |
Which one should you buy?
Choose the GA-2100 if
- You want a slim, light watch (11.8 mm, 51 g).
- You want the most custom options.
- You want the lower list price ($110 vs $155).
Choose the GA-V01 if
- You want the newest, most unusual G-SHOCK shape.
- You want about 10 years between battery changes.
- You like a full-screen LCD under a metallic openwork dial.
What the GA-2100 and GA-V01 have in common
- Both are analog-digital.
- Both are rated 200 m water resistant.
- Both run on batteries rather than solar.
GA-2100 vs GA-V01: questions
Is the GA-V01 comfortable?
It is light for its size at 74 g, but at 58.2 mm wide and 19.6 mm thick it wears big; it suits larger wrists best.
Not sure? Send us your wrist size and how you'll wear it; a person replies.
Sources
- Casio: GA-2100-1A specifications (official Casio, accessed October 25, 2026)
- Casio G-SHOCK (U.S.): GA2100: Slim & Tough Analog-Digital Watches (official Casio, accessed October 25, 2026)
- Casio: GA-2100K-1A specifications (battery, band size) (official Casio, accessed October 25, 2026)
- G-Central: G-SHOCK GA-2100 specifications (independent reference, accessed October 25, 2026)
- Casio G-SHOCK (UK): Are G-SHOCK watches waterproof or water resistant? (official Casio, accessed October 25, 2026)
- Casio (U.S.): GA-B2100-1A specifications (official Casio, accessed October 25, 2026)
- Casio (UK): GA-V01-1A (10-year battery) (official Casio, accessed October 25, 2026)
- Casio (Europe): GA-V01CMG-6A specifications (GA-V01 case) (official Casio, accessed October 25, 2026)
- G-Central: G-SHOCK GA-V01 specifications (independent reference, accessed October 25, 2026)