LARGE SIZE: 6.2*4.2 in.Weight: 122g (including battery).Automatic sleep function（It can also be closed manually）, two years of use.Very light,Easy to put in Pockets,Bags. BIG DISPLAY: Large button,candy color. Large LCD screen, 12-digit display, vertical back, 15-degree angle for easy-to-read calculator. One AAA battery is included in the package APPLICATION SCENARIO: Made of durable ABS material. Yellow-white, pink-white, orange-white, pure white, pure green, a variety of fashion styles. Small and portable general purpose desktop calculator for home, school, office or shop, can do common math like we do Has a variety of financial functions, great for adults and students DURABLE SILICONE KEYS: Good feel, ABS plastic material, light weight. Reasonable configuration, comfortable operation, automatic shutdown, independent memory, M+, M-, total (GT),Delete key(▶),percentage(％),square root(√￣).Shutdown key (OFF).Anti-slip design, with anti-slip washers, it is not easy to slide during operation. CONVENIENT SCHOOL-SIZE CALCULATOR: This large calculator is designed to sit flat on a desk, countertop, or table for easy use, yet it's compact enough to take with you on the go. A nifty calculator makes it more comfortable to use when you need it. It can be used for about two years, and replacing accessories after two years is a very simple operation.