Scientific calculator: Calculator and notepad are designed together, you can write while calculating, improve learning and work efficiency, simple operation, suitable for beginner students and science builders,Very good mini high school supplies. Health environmental protection: The blue matt LCD screen is used to protect the eyes. When you are not using a calculator, you can also put it on the table as a notepad. It can write repeatedly, reduce paper consumption, environmental protection, no dust and ink, press a clear button to erase LCD notes and protect personal privacy. Portable: This handwritten calculator is only 120g, light in weight and easy to carry. Product size: 160*78*12.8mm. You can put it in your bag, pocket, or even wallet. It is a perfect choice for office calculations, construction calculations, financial calculations, accounting calculations, student calculations, home calculations, etc. Large display: 10-digit LCD screen, 2 button batteries, can be replaced at any time without installing screws, you don't have to worry about running out of batteries.