[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 -rectangular conversions, etc..Adopt premium plastic material key, which makes it more sensitive and more precise than silicone key. Comfortable to touch.Calculator Notepad is foldable, closed to dust, easy storage, easy to carry. Perfect for junior & high school students, college students and professional researchers.Type: 991MSsize: 162 x 81 x 175mmMaterial: ABScolour: blackPackage Contents:1 x portable displayOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.