[Mechanical Blue Switches] Professional mechanical blue switches provide fast and accurate key pressing, which brings a pleasant operating experience. The tactile bump of the finger and the unique click sound are addictive. Retro and ergonomic design: thanks to the simple line and the retro round keys like the typewriter. The thick tube size is suitable for desktop use and also for handheld use. The large round keyboard easily fits your hands to prevent fatigue. Ergonomic spring-loaded design, take care of your wrist. LCD screen: The screen is designed with a 15 tilting screen for an optimal field of vision and optimal stability. Convenient and comfortable for calculating and reading. It will automatically shut down after 7 minutes without any operation, saving energy and electricity. [Gift Design] Adopt transparent packaging design, concise and easy , light pink colors reveal the calculator in high-end products