Calcualtor with Writing Pad Multiplefunctions, Easy to Carry

Es tal cual como se menciona, tiene todas las funciones de la casio 991ES Plus y la pantalla es muy clara, la pluma venia atascada pero después de desatascarla funciona perfectamente llego antes de tiempo

Bought for my grade 11 daughter. She really likes the functionality of it. Used the writing pad all the time. Easy to use !

The Upgraded 991ES Plus Scientific Calculator is an excellent tool that combines the functionality of a scientific calculator with the convenience of an erasable LCD writing tablet. This calculator is perfect for office and school use, offering a range of advanced features for financial calculations and scientific operations.One of the standout features of this calculator is its dual power source, utilizing both solar power and batteries. This ensures that you never run out of power, making it reliable and efficient in any situation. The included desktop calculator with a notepad adds to its versatility, allowing you to jot down important notes while working on calculations.The erasable LCD writing tablet is a unique addition to the calculator, providing a convenient way to take quick notes or solve problems without wasting paper. It's a great eco-friendly feature that promotes sustainability and helps you stay organized.Overall, the Upgraded 991ES Plus Scientific Calculator is a top-notch device that delivers in terms of functionality, convenience, and versatility. Its combination of a powerful calculator and an erasable LCD writing tablet makes it a must-have tool for professionals, students, and anyone in need of efficient number crunching. I would highly recommend this product and would definitely buy it again.

Viene como una calculadora normal de ese tipo con la novedad de la pizarra que se borra, cumple con su función.

I have worn out many calculators in my job, the last was an HP. This one seems very solid. Its thicker than most but not heavy, the note pad area acts like a case. This may make it more pocket resistant. It has a lot of features. The switching from hexidecimal to decimal is easier than the HP. Keys are OK, buffering is OK you can type fast wont lose any characters. The white board is nice you can sketch a few notes or an equation. It handles fractions or decimals smoothly, you can switch back and forth with one button. It has metric conversions and physical constants but you need the manual to be able to access any one since the are accessed only by an index number, so I call that not useful. The HP would let you page through the constants and had buttons for metric conversions (but fewer of them). It does not do RPN as far as I can tell but you can edit an equation after you type it. All in all I call it a useful tool, and definitely more effective than trying to use your phone to do the same. Some days you need real buttons. I would recommend for college students as well especially for chemistry. Chemistry involves a lot of entering four digit numbers with exponents, you too will wear out caculators.