![Casio Scientific Calculator FX-991ES PLUS [MS]](https://mawishstore.com/wp-content/uploads/2026/04/casio_FX_991ES_Plus_160x160.avif)
Description
- Product details Scientific Calculator FX 991ES Plus
- Two Way Power
- 417 Functions
- Full Dot Natural Display
- 40 Scientific Constants
- 40 Unit Conversions
- Approximate battery life: 2 years (LR44)*1
- Dimensions H × W × D (mm): 11.1 × 77 × 165.5
- Approximate weight (g): 90
- Case style: Slide-on hard
- Dot matrix display: 192 × 63 dots
- Mantissa + exponent digits: 10 + 2
- Internal operation digits: 15
- Nested parentheses levels: 24
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