The CASIO DS-20WK calculator with eco-battery features a simple design and functionality. - Brand: CASIO - Model: DS-20WK - Feature: Eco-battery - Display: LCD - Number of Buttons: Basic calculation buttons - Back: Non-slip - Color: Silver The key presses are quiet. It's large, so it's stable on a desk. There is some wear and tear, but no noticeable scratches or stains. It works without any problems and I think it will continue to be useful. Please understand that this is a used item, and only purchase if you are comfortable with that. Thank you for looking.