Tier 1 · ModelTier 2 · Regional variantsTier 3 · Retail listings
Tier 1 · Model / reference
ClassWiz fx-991 Series — Scientific / Graphing Calculators family
These specifications are common to all variants in this family.
Natural textbook display
Yes
Sep 12, 2026
Display
LCD 192 × 63
Sep 12, 2026
Tier 2 · Regional variants
3 variant references
Variant-level data: market, finish, and any difference from the base model. Click a row to open its product page.
| Ref | Market | Colour / finish | Key difference from base | Status | Page |
|---|---|---|---|---|---|
| fx-570EX | — | — | ClassWiz fx-570EX | Verified | Open → |
| fx-991CW | — | — | ClassWiz fx-991CW | Verified | Open → |
| fx-991EX | — | — | ClassWiz fx-991EX | Verified | Open → |
Tier 3 · Retail bundles & marketplace listings
The following entries were matched from marketplace or retailer listings. They may be bundle packs, alternate SKUs, or regional retail configurations. These are NOT independently verified model references.
No matched listings for this family yet. Listing data is ingested periodically.