Scientific calculator and notepad are designed as one, you can take notes while calculating, improve study and work efficiency. It is a great school supplies for beginners and teachers.It's a lightweight calculator with a writing pad, foldable design, and weighs only 4 ounces. It's so small that you can put it in your pocket, take it out quickly when you need it and use it right , convenient for taking notes calls and quick notes on your phone.Rewriteable, reducing paper consumption and environmental protection, no need to use a shredder to dispose of paper.Quiet Design: Using high-quality silicone keys, feel comfortable, suitable for daily computing. The mute button does not disturb others, suitable for office, study and various usage scenarios.Colour: BlackMaterial: plastic + siliconePackage Contents:1 x Scientific Calculators1 x penOnly 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.