TI-89 Titanium Graphing Calculator Texas Instruments USB, Manual, Cover Working!

This is a TI-89 Titanium graphing calculator by Texas Instruments in excellent working condition. 📦 Included: TI-89 Titanium calculator Original USB cable (included as-is) Slide-on protective cover User manual (light wear) 🔋 Batteries not included (used only to confirm functionality) ✅ Calculator is fully functional — buttons respond, screen is bright, and it powers on reliably. ✅ Display shows the current date (see photos) to confirm it works at time of listing. ✅ Battery compartment is clean with no corrosion. This model includes both a USB port and a 2.5mm I/O port for connecting to other devices. 🔌 The original USB cable is included, though we didn’t test syncing with software. Perfect for students, engineers, or anyone needing advanced graphing, calculus, or CAS functionality. Smoke-free, pet-free home.