[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. You can put it in your bag, pocket, or even wallet. It is a perfect for office calculations, construction calculations, financial calculations, accounting calculations, student calculations, home calculations, etc. [ display]10-digit LCD screen, 2 button batteries, can be replaced at any time without installing screws, you t have to worry about running out of batteries. Colour:black Material:ABS Size: 160 x 78 x 12mm Package Contents: 1 x calculator notepad 1 x English manual Only the above package content, other products are not included. Note: Light reflection 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.