Casio Natural Textbook Display Scientific Calculator │ FX‑991ESPLUS‑2PKWDT

The Casio FX‑991ESPLUS‑2PKWDT (2nd edition) features Natural Textbook Display™ (Natural V.P.A.M.), showcasing mathematical expressions exactly as they appear in textbooks. It offers a full suite of 417 advanced functions, dual power (solar + battery), and a user‑friendly design, making it ideal for secondary, university, and engineering use.

• Natural Textbook Display: Dot‑matrix, two‑line output (10‑digit mantissa + 2‑digit exponent)
• 417 built-in functions, including: trigonometry, calculus (numeric integration and differentiation), matrices and vectors, complex numbers, base-n computations, combinations, statistical analysis
• Equation mode, CALC, SOLVE, random integer generation, metric conversions, scientific constants
• Memory: 9 variable memory slots + independent memory (M/M+/M−) + answer memory + memory protection
• Power: Solar cell + internal battery (LR44), auto power-off, approximately 3 years battery life under typical use
• Includes a slide-on hard protective case for added durability
• Slim and ergonomic design, lightweight (~95 g), compact dimensions: 161.5 × 77 × 11.1 mm