A simple yet effective calculator, SDC- 1808 is a preferred choice among Orpat’s range of basic calculators. Boasting of an eight-digit display, this comes with a large interface making it convenient to the user’s eyes. The calculator is powered by both solar and battery energy. Also, the color theme makes it more appealing as it comes in shades of grey. Another essential feature available in the calculator is the function command sign, which defines the status of operation through the display. It has dedicated ON/OFF Keys.