NEWYES Scientific Calculator, 991ES with Writing Tablet and Pen, 417 Functions for Students Professionals in Mathematics, Physics Engineering

【Scientific Calculator with Notepad】Comes with a 6.5" tablet and a pen, which allows you to take notes while calculating. You can press the delete button to erase the notes and also lock it to keep them 【417 Computer Functions】Includes fractions, statistics, complex number calculations, linear regression, basic arithmetic, computer science, standard deviations, polar-rectangular conversions and more 【Foldable and Portable】NEWYES calculator notepad can fold and the LCD screen also serves as a lid that closes for neat storage when you don't need it, fits well in your pocket. It is ideal for students, engineers, teachers and professional researchers 【Solar Powered】Solar panel + replaceable button cell for hassle-free testing and long battery life 【Good Quality】NEWYES scientific calculator is durable and has premium plastic keys that are more sensitive and precise than silicone keys