Feature: 1. Scientific Calculator with Notepad: 6 inch LCD large screen writing pad with and a stylus on the side of flip place, which can effectively save your pen and paper, and you can calculate and record what you want. 2. 2 Line Display: 2 line display screen design, supports 12 digits calculations and 10 data outputs, the first line shows the calculation process, the second line shows the calculation result. This calculator includes basic calculation functions and more than 200 function algorithms such as percentage, trigonometric, fractions, Nth root, etc. 3. Eye Care: Calculator writing tablet adopts an LCD screen, no radiation, and no glare, which can effectively protect your's eyesight. It built in CR2025 battery, can be replaced for cycle use, and farewell to the traditional painting mode. 4. Lightweight and Portable Design: This foldable handwritting calculator is only about 130g, lightweight and easy to carry. It is a great tool for student calculations, office calculations, engineering calculations, business calculations, financial calculations, etc. 5. Great Present: With this 2 in 1 scientific calculator, you can calculate and tate notes at any time, which is a good assistant to improve the efficiency of work. It can effectively help students complete their math homework. Great for friends, families students, colleagues, machinist, teacher, engineer, ect. Specification: Item Type: Scientific Calculator Material: ABS Battery Type: CR2025, 165mAh (Built in). Package List: 1 x Scientific Calculator1 x User Manual