1 pc Mechanical Calculator, handheld for daily use and basic office use, 10-digit large LCD screen (black), without battery, 150*92*30mm Mechanical Blue Switches Professional mechanical blue switches provide fast and accurate keystrokes, delivering a pleasant user experience. The tactile bump on your finger and the unique audible click are addictive. Cute · Retro & Ergonomic Design With simple lines and retro round keys like a typewriter. The thick barrel body is suitable for both desktop and handheld use. The large round key fits your hands easily to prevent fatigue. Spring-type ergonomic design, takes care of your wrist. LCD Screen The screen is designed with a 15° tilted display for optimal visibility and stability. It's convenient and comfortable to calculate and read the screen. It automatically shuts off after 7 minutes of inactivity, saving energy and electricity. Note: All data is measured manually, please allow for an error of 1 to 3 cm. Due to the difference in light and display, there will be some color difference; the actual object received shall prevail.