Thank you for viewing! This is a brand new, unused medical calculator, the "Preminent"! In addition to the standard calculator mode, it also has a medical calculation mode. It comes with an instruction manual, making it easy to understand! It has been stored at home, so there may be some minor scratches on the exterior. The insulation strip has not been removed! How about using it for your daily health management? I have other items for sale as well, so please take a look! m(_ _)m