The Casio FX-115ES PLUS Scientific Calculator is a handheld device with regular key size and LCD display. It is powered by a combination of solar and battery sources, making it convenient for use in various settings. This calculator is equipped with features such as calculus functions, clock display, and is part of the Casio brand known for producing reliable office equipment. The unit has been tested and is in working condition, making it a practical choice for business and industrial applications.