The Casio FX-991ES Plus Pink is a scientific calculator featuring a natural textbook display and 417 functions. This stylish pink model combines advanced mathematical capabilities with user-friendly operation, making it ideal for students and professionals in scientific fields. Key features: • 417 built-in mathematical functions • Natural textbook display shows expressions as they appear in textbooks • Solar powered with battery backup • Stylish pink color design • 10-digit mantissa + 2-digit exponential display • Multi-replay function for formula editing • Plastic keys engineered for easy operation The calculator includes advanced functions like trigonometry, statistics, and complex number calculations. It features a high-resolution dot matrix display for clear viewing of calculations and graphs. The device comes with a protective slide-on hard case. The natural textbook display allows users to view expressions and results exactly as they would appear in textbooks, making it easier to understand mathematical concepts.