Texas Intruments TI-81 Scientific Graphing Calculator School Calculator Tested Item specifics Condition Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller?s listing for full details and description of any imperfections. See all condition definitionsopens in a new window or tab Brand Texas Key Size Regular Type Scientific Display Size Regular Power Source Battery Size Handheld Custom Bundle No Model TI-81 Features Calculus