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Casio FX-991ES Plus Scientific Calculator Fx-991 Es+solar portable rechargeable

lindalyn
(1)
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US $34.78
Condition:
New

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US $9.90 Economy Shipping from outside US.
Located in: Telipok,Sabah, Malaysia
Delivery:
Estimated between Thu, Oct 16 and Fri, Nov 14 to 94104
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eBay item number:197097735831
Last updated on Mar 14, 2025 20:50:41 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Display Size
Regular
UPC
4971850182276
Brand
Casio
Key Size
Regular
Type
Scientific
Power Source
Battery/Solar
Size
Handheld
Model
FX-991ES Plus
MPN
FX991MS/ES
Category

About this product

Product Information

Easily compute the most complex of mathematical problems, equations, and scientific formulae with the Casio FX-991ES Plus scientific calculator. The Casio 991ES calculator works with a dual power source, the primary being a built-in solar power cell that keeps it running for hours without any batteries. Moreover, with batteries installed, you can safely use it for weeks together without worrying of replacing them. You can practice all sorts of mathematical problems that appear at the GCSE, A Levels and above, with this Casio FX-991ES Plus scientific calculator. The Casio 991ES calculator resolves complex calculations, integrations, and logarithms in just a few steps.

Product Identifiers

Brand
Casio
MPN
FX991MS/ES
UPC
4971850182276
Model
FX-991ES Plus
eBay Product ID (ePID)
92844524

Product Key Features

Power Source
Battery/Solar
Size
Handheld
Key Size
Regular
Type
Scientific

Additional Product Features

Display Type
Large

Item description from the seller

About this seller

lindalyn

100% positive feedback•3 items sold

Joined Nov 2024
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Seller feedback (1)

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  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Thx
    Reply from: lindalyn- Feedback replied by seller lindalyn.- Feedback replied by seller lindalyn.
    welcome...hope you repeat order again.
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Product ratings and reviews

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4.8
166 product ratings
  • 150 users rated this 5 out of 5 stars
  • 9 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 6 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 79 reviews
  • by mi1tri
    May 18, 2020Top favorable review

    Equation Solver

    I bought the Casio FX-991 ES. Fantastic for using Newton's law of approximation to solve equations like sinδ = a + bcos(δ + β) (a, b, β constants). Just substitute the ANS key for δ in the equation and keep hitting the "=" button till the answer doesn't change (converges).

    Verified purchase: YesCondition: NewSold by: discountwatch-llc

  • by aguyonthebuy
    Sep 04, 2018

    Best Simple Display Calculator I've Used

    Best non graphing calculator for engineering courses I've used. Best part is being able to plug in human readable fractions.

    Verified purchase: YesCondition: NewSold by: ahmed1164

  • by sousabaye
    Jan 28, 2017

    Precise with great features

    I'm a student and this calculator helps me a lot to accomplish the math exercises required by class. Many functions are included, more than I will need actually but I loved the design, the big screen, the price and the ease of use.

    Verified purchase: YesCondition: NewSold by: ahmed1164

  • by helius619
    Sep 29, 2020

    Great for Digital Systems Design

    I recommend this model for CS studies and Electrical Engineering. It's real easy to calculate in non decimal base: base 2 8 and 16 and to convert it back to decimal. I think there are calculator models with a more robust screen. I guess that's why it's relatively cheap

    Verified purchase: YesCondition: NewSold by: easystreet_hangout

  • by denoma_27
    Dec 04, 2017

    Silver star

    Having the same type of calculator for last 15 years. This one is something like third generation, in my case

    Verified purchase: YesCondition: NewSold by: krazydeals2010

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