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Casio FX-991ES Plus Scientific Calculator Fx 991 Es + FX991ES New CE Logo Sealed - Picture 1 of 6
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Casio FX-991ES Plus Scientific Calculator Fx 991 Es + FX991ES New CE Logo Sealed

Condition:
New
10 available / 217 sold
Price:
US $34.83
ApproximatelyC $47.95
Best Offer:
This one's trending. 217 have already sold.
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Located in: India, India
Delivery:
Estimated between Fri, May 17 and Fri, Jun 21 to 43230
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Returns:
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Seller information

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eBay item number:151325266311
Last updated on Apr 19, 2024 22:11:47 EDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Country/Region of Manufacture
Thailand
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

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

Tolbhav

Tolbhav

98.9% positive feedback
98K items sold
Visit storeContact
Usually responds within 24 hours

Detailed seller ratings

Average for the last 12 months

Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
4.9
Communication
4.9

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Seller feedback (36,634)

e***t (29)- Feedback left by buyer.
Past year
Verified purchase
Seller responds quickly to inquiries. Shipping is MUCH faster than the last time I ordered this in March 2021. In 2021 it took 30 days from India to reach me. THIS year (October 2023) it took only 15 days from India. The tracking information is much better (more detailed) in 2023 than it was in 2021. The packaging was slightly different than pictured. Instead of 2 refills per pack it was 1 refill per pack. I still got the type, and number, that I ordered. I would buy from this seller again.
*****- Feedback left by buyer.
Past year
Verified purchase
--
a***p (190)- Feedback left by buyer.
Past month
Verified purchase
I had an excellent experience with this seller! The item arrived right on schedule, and communication was outstanding throughout. The seller was very responsive and clear, making the entire process smooth and reassuring. Top-notch service on all fronts! Highly recommend for anyone looking for a reliable and efficient transaction. Thank you for a great experience!
See all feedback

Product ratings and reviews

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Write a review
4.8
203 product ratings
  • 183 users rated this 5 out of 5 stars
  • 12 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
  • 7 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 117 reviews
  • by hendersonnh
    May 18, 2020Top favourable 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 twilliams9279
    Mar 15, 2011

    Easy to Use

    I bought this calculator because it was the best allowed for use on my exams (best in terms of its features and capablities). The "pretty print" font feature is great too. It can even perform integration and differentiation of a function at a specific value of the independent variable (or over a specified nonvariable range. Unfortunately, it can't produce the function that is the derivative, etc. of a given function like the TI89 (but then if it could it probably wouldn't be allowed on your exam anyhow). Anyway, this thing is pretty decent for calculus and physics - for stats, use a TI83 instead if you can. It is more than adaquate for business types and decent for science students too assuming your professor is against more advanced models. Engineers already know they'll be needing ...

  • by aguyonthebuy
    Sep 05, 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

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