Mechanical Blue Switches – Professional mechanical Blue switches provide fast and precise key presses,which bring pleasant use experience. The finger tactile bump and the unique audible click is addictive. Cute·Retro & Ergonomics Design – Using the simple line and Retro round keys like typewriter style . The thick tube body size is suitable for desktop use and also for handheld use. The large round keycap fit your hands easily to prevent fatigue. Spring type ergonomic design, care for your wrist. LCD Display – The display is designed with a 15 ° tilt screen for optimum field of view and stability. It is convenient and comfortable to calculate and read. It will automatically shut down after 7 minutes without any operation, saving energy and electricity. Gift Design – Adopt transparent box packaging design, Concise and easy appearance, light pink colors reveal the calculator in the high-end products Quality & Durability – High quality and durability are achieved by using advanced ABS materials.