Calculatrice scientifique mathématique avec 417 fonctions, affichage 10+2 chiffres, double alimentation, idéale pour les enseignants

Feature: 1. Scientific Calculator with 417 Functions: The Fc991ESPLUS scientific calculator features 417 built-in functions including trigonometric, exponential, logarithmic, calculus, statistical and algebraic functions, plus supports complex number, matrix and vector calculations for advanced engineering and scientific applications. 2. Clear Natural Display: This function calculator offers a 10+2 digit high-resolution screen with natural textbook display, allowing direct input and output of mathematical formulas for more intuitive operation during complex calculations. 3. Dual Power Operation: The engineering calculator operates on both solar power and included LR44 button battery (1.5V 160MAH), ensuring reliable performance in various lighting conditions without frequent battery replacements. 4. Ergonomic Design: Featuring large, clearly labeled keys and a protective slide case, this calculation tool provides durability and ease of use for frequent computations in academic or professional settings. 5. Versatile Application Tool: Suitable for students, teachers, engineers and accountants, this compact scientific device handles diverse mathematical, scientific and engineering calculations while being portable enough for daily use. Specification: Battery: 1xLR44 Button Cell 1.5V 160mAH (built-in battery included) Size: Approx. 16.3x8x1.5cm / 6.42x3.15x0.59in How to Use: Please follow the instructions provided in the manual. Package List: 1 x Calculator With Built-in Battery 2 x Instruction Manual Note: : :