NEWYES Engineering Scientific Calculator with Writing Tablet, Upgraded 991MS, with Solar Battery, 349 Functions, Professional Portable Foldable Calculator Notepad for Students, Teacher, Engineer

【Scienticfic Calculator with Notepad】Come with a 6.5 inch writing tablet and a pen, which allows you to take notes while calculating. You can press the delete button to erase the notes, and also can lock it to keep it.
【349 Computing Functions】Include fractions, statistics, complex number calculations, linear regression, base arithmetic, computer science, standard deviation, and polar-rectangular conversions, etc..
【More Sensitive Key】Adopt premium plastic material key, which makes it more sensitive and more precise than silicone key. Comfortable to touch.
【Solor Energy】Solar panel + replaceable button battery for smooth trial and long battery life.
【Foldable & Portable】NEWYES Calculator Notepad is foldable, closed to dust, easy storage, easy to carry. Ideal for junior & high school students, college students and professional researchers.