The 1980's Micronta EC-451 Dual Powered Solar/Battery Calculator is a compact calculator that offers the convenience of both solar and battery power. Made by the trusted brand Micronta, this pocket-sized calculator features a regular LCD display and is designed for easy use. This unit, originating from Thailand, is ideal for office and business applications, providing a reliable tool for calculations on the go. Although it is missing a battery, this vintage calculator is a functional and nostalgic addition to any office setting. Boxed with instructions, some writing on box and instructions