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Authentic products | Secure payments | Singapore support | Doorstep delivery | Trusted by Millions of Customers Worldwide Since 2015 | No Hidden Customs Taxes and DutiesAuthentic products | Secure payments | Singapore support | Doorstep delivery | Trusted by Millions of Customers Worldwide Since 2015 | No Hidden Customs Taxes and Duties
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991ES Plus Scientific Calculator | 417 Functions | Four-Line Natural Display | Dual Power Solar & Battery | Engineering & Student Calculator | Black
Product Details
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.
