Casio fx-991CW Scientific Calculator 🔹 High-res LCD with Natural Textbook Display 🔹 552 functions (algebra, stats, calculus, matrices) 🔹 Icon-based menu navigation 🔹 Spreadsheet functionality 🔹 Solar + battery dual power 🔹 Lightweight & durable design 📘 Ideal for: STEM students, engineers, exams (SAT/ACT)