Thank you for viewing. Casio CASIO fx-912S calculator, a retro scientific calculator. - Please see the photos for the condition of the item. - There is a small amount of dust visible in the solar charging window. Please check the photos. - It has dual power, but there are no batteries, so please replace them yourself. It can also be used with solar power only. - Please understand that this is a used item and has been stored at home. (Please refrain from purchasing if you are sensitive to this.) - It will be shipped in simple packaging. Thank you for your understanding. Please feel free to contact us if you have any questions. - Brand: CASIO - Model: fx-912S - Functions: HEX, BIN, DEC, OCT, Logical operations - Power: Dual power - Accessories: Cover Thank you for viewing.