Guerrilla Hard Slide Case-Cover for TI-84 Plus, TI 84-Plus C Silver Edition, TI-89 Titanium Graphing Calculator, Hearts Protect Your Graphing Calculator. Please note: Product is a case only. Calculator NOT included. Made From Highest Quality Non- Breakable PC Plastic Easy "Slide On/Slide Off" Technology Guerrilla is the #1 brand of calculator accessories Fits the following graphing calculators: TI 84 Plus, TI 84 Plus Silver Edition, TI 84 Plus C Silver Edition, and TI 89 Titanium.