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Compare 3 products

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Casio FX-991DE Plus Calculator
Casio FX-991DE Plus
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Casio FX-991DE X Calculator
Casio FX-991DE X
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Rebell Starlet Calculator
Rebell Starlet
Available colors
User rating
59
4.0 out of 5
59 user ratings
5 stars
37 %
4 stars
32 %
3 stars
25 %
2 stars
5 %
1 stars
0 %
65
3.6 out of 5
65 user ratings
5 stars
24 %
4 stars
30 %
3 stars
30 %
2 stars
9 %
1 stars
4 %
5
4.2 out of 5
5 user ratings
5 stars
40 %
4 stars
40 %
3 stars
20 %
2 stars
0 %
1 stars
0 %

Technical details

TypeScientific calculatorScientific calculatorBasic calculator

Design

Colour of product
  • Grey
  • Silver
Black
  • Green
  • Grey
  • Pink
  • Transparent
  • Violet
Control typeButtonsButtonsButtons
Form factorPocketPocketPocket
Coveryesyesno

Dimensions

Width3.15 in3.03 in2.64 in
Height6.38 in0.44 in4.45 in
Depth0.44 in6.52 in0.47 in
Weight3.35 oz3.17 oz1.41 oz

Display

Number of characters per line12
N/A
8
Display typeDot-matrixLCD
N/A
Display tiltingnonono
Second displaynonono
Display lightyesnono
Number of display lines
N/A
21

Power

Power source
  • Solar
  • Battery
  • Solar
  • Battery
  • Solar
  • Battery
Battery operatedyesyes
N/A
Auto power offyes
N/A
N/A
Number of batteries required11
N/A
External power connectionSolar cell
  • External source
  • Solar cell
Solar cell
Battery type
N/A
LR44
N/A

Often compared with Casio FX-991DE Plus

Often compared with Casio FX-991DE X