Mechanical Blue Switches - Professional mechanical blue switches provide fast and accurate key operation for a pleasant use experience. The touch of the fingers and the unique clicking sound are addictive. Use simple lines and retro round keys like typewriter style. 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. LCD Display - The display is designed with a 15 degree tilt screen for optimal visibility and stability. Calculation and reading are convenient and comfortable. 7 minutes without any operation automatic shutdown, energy saving. Gift Design - In a transparent box packaging design, the appearance is simple and elegant, the light pink highlights the calculator in the high-end product QUALITY AND DURABILITY - High quality and durability are achieved using advanced ABS material.