Texas Instruments TI-84 Plus Graphing Calculator. Retails for $160 at Staples, $140 on Amazon. User manual, cover, and new batteries are included. The only thing missing is the "unit-to-unit link cable" which would allow you to connect one TI-84 to another TI-84. For more info, see the following URL: https://www.staples.ca/en/Texas-Instruments-TI-84-Plus-Graphing-Calculator/product_566641_1-CA_1_20001