Reference data
fx-991EX
ClassWiz fx-991EX
Family ClassWiz fx-991 Series
Spec verified · Source: Casio JP product documentation · Last verified: 8 Oct 2026
Specifications
Hover the source icon on any row for document title and page reference.
| Spec | Value | Status | ||
|---|---|---|---|---|
| Physical | ||||
| Dimensions | 165.5 × 77.0 × 11.1 mm | Verified | ||
| Weight | 90 g | Verified | ||
| General | ||||
| Functions | 552 | Verified | ||
| Power | Solar + LR44 | Verified | ||
| Display | ||||
| Natural textbook display | Yes | Verified | ||
| Display | LCD 192 × 63 | Verified | ||
| Display digits | 12 | Verified | ||
| Display type | Natural Textbook Display | Verified | ||
| Power | ||||
| Power source | Solar + Battery | Verified | ||
| Features | ||||
| Functions | 552 | Verified | ||
Regional variants
Each reference has its own verified page.
| Model ref | Market | Notes | Status |
|---|---|---|---|
| fx-991EX current page | — | — | Verified |
| fx-570EX → | — | ClassWiz fx-570EX | Verified |
| fx-991CW → | — | ClassWiz fx-991CW | Verified |
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