Enhance your calculation and note-taking efficiency with this multifunctional scientific calculator, designed to meet the diverse needs of students, professionals, and business users. Featuring an impressive 417 computing functions and 8 calculation modes, this advanced calculator supports a wide array of mathematical, scientific, and statistical operations, making it an essential tool for complex problem-solving. Key Features: · Multifunctional Scientific Calculator: Offers 417 computing functions and 8 types of calculations, providing comprehensive support for daily calculation tasks in education, office, and professional environments. · Integrated Calculator and LCD Writing Tablet: Combines a high-precision scientific calculator with an LCD writing tablet for seamless note-taking using the included stylus pen, enabling efficient study sessions and quick jotting of important information during calculations. · Dual Power System: Equipped with a solar panel and replaceable CR2032 3V coin battery, ensuring continuous power supply without interruption, ideal for on-the-go use and energy-efficient operation. · Durable Anti-Drop Design: Constructed with a robust ABS body tested against drops and impacts, this calculator guarantees long-lasting durability and reliable performance even in demanding daily use. · Portable and Lightweight: Weighing only 5.3oz (153g) and measuring 162 x 162 x 17.5mm when unfolded, this compact calculator easily fits into pockets, backpacks, or briefcases, providing convenience for students, office workers, and travelers alike. Specifications: · Model: 991ES · Product Size (Unfolded): 162 x 162 x 17.5 mm · Product Weight: 153g / 5.3oz · Battery: Replaceable CR2032 3V 240mAh coin battery · Main Material: Durable ABS plastic · Input Pressure: 150-300g · Display: Flexible LCD screen combined with calculator panel · Reflectivity: 25%-30% Package Includes: · 1 x Multifunctional Scientific Calculator with LCD Writing Tablet · 1 x Stylus Pen This multifunctional scientific calculator with integrated notepad is an innovative and practical solution for enhancing your productivity and accuracy in calculations, note-taking, and study. Its durable construction, reliable dual power source, and comprehensive features make it an indispensable accessory for students, educators, and professionals seeking a versatile and portable calculation tool.