AUTO POWER OFF: This calculator runs on just one AAA battery (included) and features an auto power off function that activates after 10 minutes of inactivity, saving battery life and ensuring longevity.LOVELY RETRO: Use typewriter-style clean lines and retro round keys. Thick tube body size is suitable for desktop use and also suitable for handheld use. The large round keycaps fit easily in both hands and prevent fatigue. Spring-loaded ergonomic design protects your wrist.DURABLE MATERIAL: Good feel, ABS plastic material, light weight. Reasonable configuration, comfortable operation, automatic shutdown, independent memory, M+, M-, total (GT), delete key ()square root()percentage (%). Anti-slip design, with anti-slip washers, it is not easy to slide during operation.APPLICATION SCENARIO: Yellow and black, pink and white, green and white, white and black, a variety of fashion styles. Small portable general purpose desktop calculator for home, school, office or shop that can do general math like we do, with a variety of financial functions, perfect for adults and students. Gift box design, perfect for gift givingIMITATION MECHANICAL KEYBOARD: Imitating the knocking feel of a mechanical keyboard (the keyboard cannot be disassembled without special tools), the key operation is fast and accurate, bringing a pleasant experience.. The touch of your fingers and the unique clicking sound are addictive.Large button, candy color.Large LCD screen,12-digit display, vertical back,15-degree angle for easy-to-read calculator