Texas Instruments Texas Instruments TI25X Solar Calculator

Product description Will come with slide cover. Tested and working. Amazon.com The Texas Instruments TI25X Solar calculator is designed for students and technical professionals who need a calculator with general math and science functions. It calculates one-variable statistics, common and natural logarithms, universal powers and roots, and polar/rectangular conversions. It features trigonometric functions in degrees, radians, and grads. The TI25X Solar runs on solar power so you'll never have to worry about low battery power or changing batteries. It includes a protective slide cover.