Texas Instruments TI-89 Titanium Graphing Calculator (packaging may differ)
Amazon.com : CaseSack Graphic Calculator Case for Texas Instruments Plus CE Color Graphing Calculator, TI84, TI83, TI89, Pockets for USB Flash Memory, Stationery, Detachable with Wrist Strap (Black with Gray Zip) :
Amazon.com : TI-89 Titanium Programmable Graphing Calculator, Sold as 1 Each : Office Products
Amazon.com : TI-89 Titanium Programmable Graphing Calculator, Sold as 1 Each : Office Products
Amazon.com : co2CREA Hard Case Compatible with Texas Instruments TI-84 Plus CE/TI-84 Plus/TI-Nspire CX II CAS/TI-Nspire CX II/TI-83 Plus/TI-89 Titanium/TI-85 / TI-86 Color Graphing Calculator : Office Products