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|Power Source||Battery and Solar|
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Sheshadri T R
Dec 18, 2013
Serves the purpose, too good for me!!
Aug 27, 2012
Best in class
Aug 6, 2012
Notebook entry display
Aug 5, 2012
awesome one !!!!
Aug 5, 2012
An Engineer's life depends on how well his calculator works.
Dec 11, 2011
991ES is gr8 calc for engg. students .... its a steal at this priceI have been using the Casio FX991ES for the past 4 yrs. Its a gr8 device for engg. students. The greatest feature is the natural notebook display which allows the user to write fractions and functions in a natural manner.
Nov 22, 2011
AmaizingBest calculator i have ever used. natural notebook dishplay makes easy to write fraction,solution of equations, matrix,integration, differentiation etc.
Nov 23, 2011
Best for Engineering studentsI felt that it is the best klc for engineering students @ very affordable price with trust of flipkart.
May 3, 2012
Worth the money.Now of course Flipkart is always the best! I've been a regular customer and never have they let me down. Rock bottom prices and lightning speed deliveries!
May 4, 2012
Paisa VasoolI've been using this calculator for 2 years and had no issues with it so far. It is an excellent product from casio.
Aug 5, 2012
An Engineer's life depends on how well his calculator works.This calculator is like a perpetual motion machine. It never needs a battery! (Although I did get the battery that came with it after six months of purchase). Since then, There has been no battery issue. In first six months of Engineering, we don't use the calculator that much, but the battery needed to be replaced. But after that, I have been using it extensively (to the point of doing calculations like 15+7=22 :P along with the engineering functions
Apr 28, 2012
extremely usefulpurchased this item 2 weeks ago. working fine. the solar charge pannel is really good. no tension for changing the battery. best buy for engineers & technical students. key buttons are hard plastick made & rigid. good stuff overall.
Mar 1, 2012
Best for Engineer..!!!One of the best calculator in the current market for engineers and I'll give 5 out of 5...!!!
Feb 25, 2012
this product is so goodthis product is good but this product price is high in my nearer shop. this product is useful of the all engineering students. this calculator is use of to matrix multiplication and matrix diterminets and this products is so good for all engineering students.
Dec 29, 2011
the one for engg studentsi have used this calc for the past 3 years...really amazing one...it has easy to use functions like equations,matrices,solve func this makes engg calculations piece of cake....a definite must buy product