Comparison
Casio GBM-2100A vs Seiko SSH175J1
Sourced specs side by side. A value is highlighted only where one is objectively greater (power reserve); size and the rest are a matter of taste. unknown means no sourced value yet.
At a glance
- Both use a solar movement.
- Casio GBM-2100A is 0.3 mm larger (44.4 mm vs 44.1 mm).
- Casio GBM-2100A has a bio-based resin case; Seiko SSH175J1 is in titanium.
| Spec | GBM-2100A | SSH175J1 |
|---|---|---|
| Brand | Casio | Seiko |
| Family | G-Shock | Astron |
| Reference | GBM-2100A | SSH175J1 |
| Production start | unknown | unknown |
| Production end | unknown | unknown |
| Status | Current | Current |
| Retail price | unknown | unknown |
| Case material | Bio-based resin | Titanium |
| Diameter | 44.4 mm | 44.1 mm |
| Casio GBM-2100A is 0.3 mm larger | ||
| Movement | Solar | Solar |
| Caliber | Casio 5729 | unknown |
| Winding | unknown | unknown |
| Power reserve | unknown | unknown |
| Jewels | unknown | unknown |
| Frequency | unknown | unknown |
| Complications | unknown | unknown |