This is a SHARP PC-E200 pocket computer. I have confirmed that it powers on and that numbers can be entered using the numeric keypad, but I have not checked all of its functions. As shown in the third photo, there is a scratch on the lower right of the screen that looks like it was made with a needle (it does not go all the way through), but I don't think it will affect the screen display or use. I am not very familiar with it, so I may not be able to answer questions about detailed functions. It is an old item, so there are scratches and marks from use and storage. Please judge the condition from the photos and I would like to sell it to someone who understands this.