A graphing calculator, specifically the TI-84 Plus model, that has been previously owned and returned to a functional state through inspection, repair (if necessary), and cleaning. These units are typically offered for sale again at a reduced price compared to new calculators.
Acquiring one of these units provides a cost-effective alternative to purchasing a brand-new device, especially for students or individuals with budget constraints. Functionally, these calculators provide the same capabilities as their new counterparts, including graphing, statistical analysis, and programming. The practice of restoring and reselling calculators also contributes to a more sustainable consumption model by extending the life cycle of electronic devices.