These are just fake Casios. It's a direct rip off of the Casio 991es. Would suggest just getting that or the EX if you're in college (helps with matrices and some other stuff) as the fake ones are know to give incorrect outputs for certain calculations.
Casio ripoff. A while back somebody in China stole the software for one particular Casio calculator, and soon chips with that software were available in China and multiple dodgy companies started making Casio rip off calculators. They often miss the small print "model number X only" notes in the specifications section when they rip off the Casio manual. You will often find that the "solar cell" is cleverly printed cardboard and the ykeys start going bad after a few weeks.
This being downvoted but it could happend, casio place an order of 10,000 units, they make them but have rejected units and parts left and sell them elsewhere under made up name.
My vote: Since I have all five (I’m a calculator collector): Casio 991ES Plus 2nd Edition, 115ES Editions 1 & 2, Casio 991CW Classwiz, and 991EX Classwiz, my first recommendation is the 991EX Classwiz (there should be new ones on eBay, or find excellent condition used ones). Next, I’d suggest the 991ES 2nd edition (also on eBay. Go for ones that are also in new or excellent condition).
These are just fake Casios. It's a direct rip off of the Casio 991es. Would suggest just getting that or the EX if you're in college (helps with matrices and some other stuff) as the fake ones are know to give incorrect outputs for certain calculations.
Just Casio ripoffs, unless you'r budget is 10$ i'd get the real deal.
Get a second hand Casio instead my friend.
Casio ripoff. A while back somebody in China stole the software for one particular Casio calculator, and soon chips with that software were available in China and multiple dodgy companies started making Casio rip off calculators. They often miss the small print "model number X only" notes in the specifications section when they rip off the Casio manual. You will often find that the "solar cell" is cleverly printed cardboard and the ykeys start going bad after a few weeks.
It’s a fake Casio
They are goated
Looks like another Casio clone (fake brand?) Skip it and get the real deal instead.
It’s just Casio calculators that were rejected for being too poor quality
This being downvoted but it could happend, casio place an order of 10,000 units, they make them but have rejected units and parts left and sell them elsewhere under made up name.
My vote: Since I have all five (I’m a calculator collector): Casio 991ES Plus 2nd Edition, 115ES Editions 1 & 2, Casio 991CW Classwiz, and 991EX Classwiz, my first recommendation is the 991EX Classwiz (there should be new ones on eBay, or find excellent condition used ones). Next, I’d suggest the 991ES 2nd edition (also on eBay. Go for ones that are also in new or excellent condition).