AZ-26S Calculator CASIO Eco-Battery Equipped Purchased in high school. Since it was used only a few times, I will sell it in a clean condition. For beginners to calculators, bookkeeping exams, and those preparing for tax accountant/certified public accountant exams. This is a professional calculator that can be used directly in practice. It features an easy-to-read display, high-speed operation, quiet operation, and excellent durability, using both solar and lithium batteries. It's a semi-permanent ECO calculator. It has been stored in a dark place, but please refrain from purchasing if you are concerned about storage by a non-professional. Tracked, anonymous shipping Immediate purchase is OK ⭕️