This Sharp EL-531XH scientific calculator features a twinline LCD display with upper 12 digits and lower 10 + 2 digits. The calculator is twin powered and has a total of 272 functions, with constant/chain calculations and multi-line playback. This pack contains 1 black scientific calculator. Twinline LCD display: upper 12 digits; lower 10 + 2 digits Constant/chain calculations Multi-line playback 272 functions Twin powered Colour: black