Scientific calculator: The calculator and notepad are designed together, you can write while calculating, improve learning and work efficiency, simple operation, suitable for beginner students and scientific builders. > Protection of the health environment: The matte blue LCD screen is used to protect the eyes. When you don't use a calculator, you can also put it on the table as a notepad. It can write repeatedly, reduce paper consumption, protect the environment, no dust or ink, press a clear button to erase LCD notes and protect privacy. Portable : This handwritten calculator weighs only 120g, is light and easy to carry. Product size: 160 x 78 x 12.8mm. You can put it in your bag, pocket or even your wallet. It is a perfect choice for office calculations, construction calculations, financial calculations, accounting calculations, student calculations, home calculations, etc. Large screen: LCD screen 10 digits, 2 button batteries, can be replaced at any time without installing screws, you don't have to worry about running out of batteries. What's in the box: 1 calculator notebook, 1 detailed user manual.