

991ES Calculator for Highschool
Merchant Video
ClimatePartner Carbon Neutral Certified
Green Commitment, Trusted Quality
Trusted Environmental Standards
Through ClimatePartner, our carbon management system has achieved globally recognized certification, ensuring our environmental efforts are transparent, credible, and ongoing. Choose us with confidence, knowing every dollar spent helps protect the planet.
Four calculators for your choose,meet up your different needs of calculation.
How to take the pen out?
The pen is built in the left lower corner of the calculator,you can slide it out.Please NOTE:It might be a little tight to take it out at the first time.
How to clear up the writing tablet?
Turn the button to the unlocked position, so you can erase the notes on the screen by pressing the clear button.
How do you change the setting from fractions to obtain a decimal answer?
You can change the results through the key 'S?D'; Or you can configure calculator setting: 1. Press the button 'SHIFT'. 2. Press the button 'MODE'. 3. Choose 1 or 2 to set the mode of fraction or decimal. MthIO for fraction, LineIO for decimal.

991ES Calculator for Highschool
Merchant Video
Green Commitment, Trusted Quality
Trusted Environmental Standards
Through ClimatePartner, our carbon management system has achieved globally recognized certification, ensuring our environmental efforts are transparent, credible, and ongoing. Choose us with confidence, knowing every dollar spent helps protect the planet.
Four calculators for your choose,meet up your different needs of calculation.
![]() 991 ES-Black | ![]() 82 MS-Black | ![]() 991 ES-MAX-Pink | ![]() 82MS-Pink-Slim | ![]() Graphing Scientific | ![]() Sliding Cover Calculator | ![]() Desk Calculator |
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| Price | ||||||
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| Functions | ||||||
| 417 Functions | 240 Functions | 417 Functions | 240Functions | 360 Functions | 401 Functions | Basic Calculator Functions |
| Suit | ||||||
| Engineer/College/High School | High/Middle School Student | Engineer/College/High School | High/Middle School Student | Engineer/College/High School | High/Middle School Student | Middle School Student |
| Rechargeable | ||||||
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| Calculating & Writing | ||||||
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| Lock & Unlock Design | ||||||
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| Foldable | ||||||
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| Dual Power | ||||||
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| Stylus Pen | ||||||
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How to take the pen out?
The pen is built in the left lower corner of the calculator,you can slide it out.Please NOTE:It might be a little tight to take it out at the first time.
How to clear up the writing tablet?
Turn the button to the unlocked position, so you can erase the notes on the screen by pressing the clear button.
How do you change the setting from fractions to obtain a decimal answer?
You can change the results through the key 'S?D'; Or you can configure calculator setting: 1. Press the button 'SHIFT'. 2. Press the button 'MODE'. 3. Choose 1 or 2 to set the mode of fraction or decimal. MthIO for fraction, LineIO for decimal.





















































