This Texas Instruments TI-86 Graphing Calculator comes with a protective cover and is fully functional. It has been tested and works perfectly. The calculator is a handheld device that runs on batteries, making it easy to carry around. With its LCD display, calculus capabilities, and programmable features, it's a great tool for students and professionals alike. It has a regular key size and display size, and belongs to the category of calculators under Business & Industrial, Office, and Office Equipment. The model is Texas Instruments TI-86 and the brand is Texas Instruments.

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