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Casio FX-991EX Classwiz Scientific Calculator Flawed Black with Case

Name: Casio FX-991EX Classwiz Scientific Calculator Flawed Black with Case
Brand: Casio
Price: 37.99 GBP
Availability: OutOfStock
Rating: 4.81 (439 reviews)

ZK's Treasure Trove

(33)

£37.99

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Condition:

Used

“This calculator has a number of keys that are sticking and require some effort to use. The OPTN, ”... Read moreAbout condition

Postage:

May not post to United States. Read item description or contact seller for postage options. See detailsfor postage

Located in: Blackburn, United Kingdom

Delivery:

Varies

Returns:

30 days return. Buyer pays for return postage. See details- for more information about returns

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eBay item number:404942966684

Last updated on 01 May, 2024 00:14:50 BSTView all revisionsView all revisions

Item specifics

Condition: Used

Seller notes: “This calculator has a number of keys that are sticking and require some effort to use. The OPTN, ...

Country/Region of Manufacture: Thailand

EAN: 4549526603327

Brand: Casio

Key Size: Regular

Type: Scientific

Display Size: Regular

Power Source: Solar, Battery

Size: Handheld

Model: Casio fx-991EX

MPN: FX-991EX

Features: LCD Display, Backlight, Calculus

About this product

Product Identifiers

Brand

Casio

MPN

FX-991EX

EAN

4971850092315, 4549526603327

UPC

4971850092315, 4549526603327

Model

Casio fx-991EX

eBay Product ID (ePID)

13031982778

Product Key Features

Power Source

Solar, Battery

Size

Handheld

Key Size

Regular

Display Size

Regular

Features

LCD Display, Backlight, Calculus

Type

Scientific

Dimensions

Weight

198g

Additional Product Features

Colour

Black

Item description from the seller

Business seller information

Ziyad Ali Karolia

69 Meadowbrook Rise

Blackburn

Lancashire

BB2 3JG

United Kingdom

Seller assumes all responsibility for this listing.

eBay item number:404942966684

Last updated on 01 May, 2024 00:14:50 BSTView all revisionsView all revisions

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The seller has not specified a postage method to United States. Contact the seller and request postage to your location.

Item location:

Blackburn, United Kingdom

Posts to:

United Kingdom

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Afghanistan, Libya, Nauru, Russian Federation, Somalia, Ukraine, Yemen

Dispatch time

Will usually dispatch within 1 working day of receiving cleared payment.

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Returns policy

After receiving the item, cancel the purchase within	Return postage
30 days	Buyer pays for return postage

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The buyer is responsible for return postage costs.

Return policy details
Returns accepted

Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item. Find out more about your rights as a buyer and exceptions.

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4.8

439 product ratings

394 users rated this 5 out of 5 stars
29 users rated this 4 out of 5 stars
5 users rated this 3 out of 5 stars
1 users rated this 2 out of 5 stars
10 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 324 reviews

by isabelmay77
13 Sep, 2022Most favourable review
The Ultimate Compromise
It trumps everything on the market in the value-for-money stakes, offering a viable alternative to expensive, graphical-plot calculators, at an unbelievably low price. What Casio did was incredible: they addressed the needs of those wanting a much more expensive, high-end, graphical-plot calculator, like the fx-cg50, but couldn't afford one. What you get here is all the features you'd look for in a more expensive calculator allowed for GCE use, but in a much slimmer body, less than half the price, and with a few extra facilities high-end models don't offer. As an example, it can solve polynomial inequalities, giving you the answer as it should be written down (even the fx-cg50 can't do this). Apart form it's ability to solve single-variable equations, as presented with no rearrangement, ... It trumps everything on the market in the value-for-money stakes, offering a viable alternative to expensive, graphical-plot calculators, at an unbelievably low price. What Casio did was incredible: they addressed the needs of those wanting a much more expensive, high-end, graphical-plot calculator, like the fx-cg50, but couldn't afford one. What you get here is all the features you'd look for in a more expensive calculator allowed for GCE use, but in a much slimmer body, less than half the price, and with a few extra facilities high-end models don't offer. As an example, it can solve polynomial inequalities, giving you the answer as it should be written down (even the fx-cg50 can't do this). Apart form it's ability to solve single-variable equations, as presented with no rearrangement, it also has matrix, vector, statistical distribution facilities, dual tables, spreadsheets, and an equation-solving mode for simultaneous equations with up to 4 unknowns, and polynomial equations up to powers of 4. You also get a ratio solver; HCF, LCM and prime factorisation. It's dual powered, and even outputs data for graphical plotting via an app on your smartphone. Good quality? Only time will tell, but Casio have over 45 years of experience, and offer a 3-year warranty, so it should prove reliable, even if the keyboard does feels a bit trashy.
Verified purchase: YesCondition: NewSold by: smot1993-8
by forcefield_1
09 Feb, 2024Most critical review
Great Calculator, Keys a bit iffy, double check that the intended digits are up on the screen!
The calculator is very powerful and has more functions than most engineers etc will need. It is well priced and offers good value. However wher it falls down in my view is that if you are used to inputting data fairly swiftly, the keys very frequently dot not register and so errant results occur. I have found I have had to slow down considerably, press the keys very firmly and look at the screen on every push to confirm that the value has been registered correctly. This never seemed to be an issue going back say as much as 20 years. the buttons only had to be brushed upoin and the correct value was there on the screen in front of you. HAS QUALITY CONTROL AND/OR MASS MANUFACTURING METHODS TAKEN A BACKWARD STEP? The calculator is very powerful and has more functions than most engineers etc will need. It is well priced and offers good value. However wher it falls down in my view is that if you are used to inputting data fairly swiftly, the keys very frequently dot not register and so errant results occur. I have found I have had to slow down considerably, press the keys very firmly and look at the screen on every push to confirm that the value has been registered correctly. This never seemed to be an issue going back say as much as 20 years. the buttons only had to be brushed upoin and the correct value was there on the screen in front of you. HAS QUALITY CONTROL AND/OR MASS MANUFACTURING METHODS TAKEN A BACKWARD STEP?
Verified purchase: YesCondition: NewSold by: quickdirectstoreltd
by sw_numberstation08
21 Aug, 2019
If you´re not a real genius, I doubt that you´ll use all those functions. A full calculator!
One of the most complete calculators nowadays. It´s light and powerful. It has tons of functions. The screen is large enough to show complete formulas, real nice. The screen has a very good contrast ratio and it´s easy to see. The menu has too many functions that you have to study it first. The manual is very unpleasant to read, a small piece of paper with small letters. The QR Code function is very interesting, it can transform your calculations into complete graphical representations so you can paste on a word processor and save time. The metal buttons give it an elegant visual to the calculator. The keys are soft and steady and the division of colors make it nice to get used to it. The front cover is white and can fit right in the back when you´re using it. Since it´s made of thin ... One of the most complete calculators nowadays. It´s light and powerful. It has tons of functions. The screen is large enough to show complete formulas, real nice. The screen has a very good contrast ratio and it´s easy to see. The menu has too many functions that you have to study it first. The manual is very unpleasant to read, a small piece of paper with small letters. The QR Code function is very interesting, it can transform your calculations into complete graphical representations so you can paste on a word processor and save time. The metal buttons give it an elegant visual to the calculator. The keys are soft and steady and the division of colors make it nice to get used to it. The front cover is white and can fit right in the back when you´re using it. Since it´s made of thin plastic, I would recommend you to buy a proper case to keep it safer.
Verified purchase: YesCondition: NewSold by: krazydeals2010
by carlylongbelly
26 Feb, 2023
Casio FX-991EX Review
First of all if you have anyone who is and/or just started secondary school I would seriously encourage anyone to purchase this calculator. Although it say's GCSE or A Level for a scientific calculator this is standard and recognized for all secondary school maths and further education. You won't need to purchase the more expensive graphics calculator as this one has so many features it's a lot more cheaper and offers best value for money amongst all the other models and other makes. WORD OF WARNING... Beware of counterfeit models which look exactly the same as the original in fact you cannot tell the difference part from the following. 1. If you place your hand over the solar panel window you should see in icon which looks like a sun disappear and/or the display dim slightly. 2. This ... First of all if you have anyone who is and/or just started secondary school I would seriously encourage anyone to purchase this calculator. Although it say's GCSE or A Level for a scientific calculator this is standard and recognized for all secondary school maths and further education. You won't need to purchase the more expensive graphics calculator as this one has so many features it's a lot more cheaper and offers best value for money amongst all the other models and other makes. WORD OF WARNING... Beware of counterfeit models which look exactly the same as the original in fact you cannot tell the difference part from the following. 1. If you place your hand over the solar panel window you should see in icon which looks like a sun disappear and/or the display dim slightly. 2. This calculator is solar powered but has a battery backup as well, if you open the battery compartment there should be a battery inside. 3. There's a Casio App you can install on your Apple or Android phone, this calculator has a unique feature that after any computation it can generate a QR code and you scan this with your phone using the App. This will then open a webpage on your device and show the math equation. This feature isn't a necessary requirement for day to day use but it will confirm if you have a genuine product or not. All-in-All this is a brilliant product not just for students but for anyone just to have on their desk, workshop and/or at home. Hope this Helps :-)
Verified purchase: YesCondition: NewSold by: 2014golding1
by arfarc
06 Nov, 2019
Wonderful calculator type in fractions and formulae as in text books
Wonderful calculator easy to use and type in fractions and formulae as found in text books. Very useful for my kids going to secondary school and beyond. Be aware though there are many imitations on ebay that dont have same functions but image looks the same. Usually missing casio logo and sold as unbranded by some ebayers. But may arrive as citiiizen branded a cheap copy.
Verified purchase: YesCondition: NewSold by: varni-thebrand

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Casio FX-991EX Classwiz Scientific Calculator Flawed Black with Case

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Item specifics

About this product

Product Identifiers

Product Key Features

Dimensions

Additional Product Features

Item description from the seller

Business seller information

Post to me

Returns policy

Payment details

ZK's Treasure Trove

Detailed seller ratings

Average for the last 12 months

Seller Feedback (27)

Product ratings and reviews

Most relevant reviews

The Ultimate Compromise

Great Calculator, Keys a bit iffy, double check that the intended digits are up on the screen!

If you´re not a real genius, I doubt that you´ll use all those functions. A full calculator!

Casio FX-991EX Review

Wonderful calculator type in fractions and formulae as in text books

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