Check the listing for details. Texas Instruments TI-15 Explorer Basic Calculator With Cover. Condition: Used. Listed at 9.74 USD. Will come as pictured. Fast shipping. This Texas Instruments TI-15 Explorer basic calculator with cover is a great addition to any workspace. It has all the features you need to tackle any calculation task, including basic functions and a battery-powered power source. The calculator is in excellent working condition and comes with a protective cover for easy storage and portability. This calculator is perfect for business and industrial settings, as well as office and home use. It is specifically designed for basic calculations and is ideal for students, professionals, and anyone who needs a reliable calculator. The Texas Instruments brand is known for producing high-quality calculators, so you can trust that this TI-15 Explorer model will meet all of your calculation needs.