Enhance your mathematical and scientific calculations with the TY-991EX Scientific Calculator, designed to deliver comprehensive functionality and user-friendly performance. Featuring 552 built-in functions, this calculator supports a wide array of operations including trigonometric, exponential, logarithmic, calculus, statistics, algebra, as well as complex number, matrix, and vector calculations, making it an essential tool for students, teachers, engineers, and professionals. Key Features: · Extensive 552 Built-in Functions: Covers a broad spectrum of scientific and engineering calculations, ensuring versatility for various academic and professional needs. · High-Definition Dot Matrix Display: Equipped with a 192x63 pixel high-definition screen, the natural display format allows for direct input and output of mathematical formulas, making complex calculations easier to read and understand. · Dual Power Source: Powered by a solar panel and an LR44 button battery (1.5V, 160mAh), this calculator ensures continuous and reliable operation indoors and outdoors while minimizing battery replacements. · User-Friendly Design: Large, clear numeric keys enhance input accuracy, and the durable protective cover with anti-collision design safeguards the device, ensuring long-lasting use. · Compact and Lightweight: Measuring 165 x 80 x 15 mm and weighing only 125g, this calculator is portable and convenient for everyday use or study sessions. · Versatile Applications: Perfect for students, educators, engineers, accountants, and anyone requiring advanced calculation capabilities in mathematics, science, and engineering fields. Specifications: · Model: TY-991EX · Color Options: White, Black · Size: 165 x 80 x 15 mm · Weight: 125 g · Battery: LR44, 160mAh, 1.5V · Display: High-definition dot matrix (192x63 pixels) with natural display format Package Includes: · 1 x TY-991EX Scientific Calculator The TY-991EX Scientific Calculator combines advanced functionality with a durable, ergonomic design to support complex calculations with ease and precision. Its dual power source and high-definition display make it a reliable and efficient choice for academic and professional environments.