Amazon Basics 991ES Plus Scientific Calculator | 417 Functions | Four-Line Natural Display | Dual Power Solar & Battery | Engineering & Student Calculator | Black

Features-

• 417 Advanced Scientific Functions: Equipped with 417 built-in calculation functions including trigonometry, logarithms, exponentials, calculus, statistics, algebra, complex numbers, matrices, and vectors—ideal for students, engineers, and professionals.
• Large Four-Line Natural Text Display: Features a large four-line screen with natural textbook-style display, allowing formulas and results to appear exactly as written, making complex calculations easier to read and understand.
• Dual Power – Solar & Battery Operated: Powered by both a solar panel and a long-lasting battery for reliable use indoors and outdoors, reducing battery replacement frequency and ensuring uninterrupted performance.
• 10-Digit Mantissa + 2-Digit Exponent: High-precision display supports accurate calculations with a 10-digit mantissa and 2-digit exponent, suitable for advanced scientific and engineering computations.
• Multi-Functional Scientific Keyboard: Ergonomically designed keyboard with dedicated scientific symbols and function keys for fast, efficient input and seamless operation across multiple calculation modes.

Made for Smarter Problem Solving Advanced Function Range

Handles 417 functions for science and engineering calculations.

Textbook Style Display

The four line screen shows formulas clearly for easy