I am selling this item, which has been stored at home for a long time. It was purchased in the late 1980s. Manufacturer: Sharp Model Number: EL-470 Includes: Main unit, case, instructions for the EL-470, etc. Battery: CR2032 x 1 (operation confirmed) Features: World clock function, currency conversion function The case shows some signs of use, but the main unit is clean. Operation has been confirmed at present, but please consider that this is an item of considerable age. #ShowaRetro #ShowaSharp #SHARPcalculator #SHARP #1980s