Looking for an honest Casio G-Shock GBM-2100 vs CMF Watch Pro 2 comparison in 2026? We scored both smartwatches on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Casio G-Shock GBM-2100 comes out ahead 49/100 to 35/100 — a 14-point gap. The widest gap is in battery life, where the Casio G-Shock GBM-2100 pulls noticeably ahead. On price the CMF Watch Pro 2 undercuts the Casio G-Shock GBM-2100 by 506% ($32.99 vs $200), which materially changes the value calculus for budget-conscious buyers.

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Casio G-Shock GBM-2100 edges out the CMF Watch Pro 2 in the smartwatches category, especially in battery life (300h vs 36h battery), scoring 49 vs 35. If you want the better overall smartwatches, Casio G-Shock GBM-2100 is the recommended choice.
Picking Casio G-Shock GBM-2100 over CMF Watch Pro 2 means trading these off.
Casio
$200
Scores are relative within the smartwatchescategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
| Spec | Casio G-Shock GBM-2100W | CMF Watch Pro 2 |
|---|---|---|
| Display | 1.2" | 1.3"✓ |
| Display Type | — | AMOLED |
| Resolution | — | 454 x 454 pixels |
| OS | — | proprietary |
| Heart Rate | — | Optical HR 24/7 |
| SpO2 | — | Yes (blood oxygen) |
| ECG | — | true |
| GPS | — | Yes |
| Workout Modes | — | 90+ including swimming |
| Swim Proof | — | 50m water resistance |
| Battery Life | 300hrs✓ | 36hrs |
| Bluetooth | — | Bluetooth 5.0 |
| NFC | — | Yes |
| Case Material | — | Stainless Steel |
| Water Resistance | — | IP68 |
| Weight | 51g | 45g✓ |
| Price | 200$ | 32.99$✓ |
Buy Casio G-Shock GBM-2100 if…
Buy the Casio G-Shock GBM-2100 if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Buy CMF Watch Pro 2 if…
Choose the CMF Watch Pro 2 if budget is your top priority — it offers competitive specs at a lower price point.
Casio G-Shock GBM-2100 edges out the CMF Watch Pro 2 in the smartwatches category, especially in battery life (300h vs 36h battery), scoring 49 vs 35. If you want the better overall smartwatches, Casio G-Shock GBM-2100 is the recommended choice.
Yes, Casio G-Shock GBM-2100 scores higher overall (49 vs 35).
CMF Watch Pro 2 is cheaper at $32.99 vs $200 for the Casio G-Shock GBM-2100.
Buy the Casio G-Shock GBM-2100 if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Choose the CMF Watch Pro 2 if budget is your top priority — it offers competitive specs at a lower price point.
Casio G-Shock GBM-2100 lasts longer with 300 hours vs 36 hours for the other.
CMF Watch Pro 2 has the larger display (1.3" vs 1.2").
CMF Watch Pro 2 is lighter at 45g vs 51g.
Reviewed by VersusMatrix Editorial Team
Last updated: May 10, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.