- Writing Board Design: The scientific calculator features a 6 inch writing board and a hidden pen that lets you take notes while you calculate. Press the erase button to clear notes, and a lock switch at the bottom protects the pen notes from accidental touching and stores them securely. - LIGHTWEIGHT & PORTABLE: This is a mini calculator with an erasable writing pad and foldable design, weighing about 200 grams. It is compact and can be carried in a bag, allowing quick removal and immediate use when needed. - 240 Calculation Functions: This engineering science calculator has 240 calculation functions that cover a wide range of uses such as statistical calculations, scientific function calculations, and more, such as standard deviation, square sum, functions, square root and scientific, technical notation. - HIGH DEFINITION TWO LINE DISPLAY: This scientific calculator has a large two-line LCD display without blue light radiation and a 10+2-bit digit display, which displays numbers and results clearly and clearly. Work efficiently without errors. - Use scenarios: In class or tutoring sessions to solve problems while noting steps; on-site engineering tasks to perform complex calculations and record observations; during meetings to jot quick reminders while calculating or outlining plans.