Multi-Purpose UseThe calculator is not only powerful, but also very portable, making it the perfect tool to quickly fulfill your daily computing needs in a variety of settings such as schools, offices, homes, stores, and more. It is also ideal for students, teachers, colleagues and anyone else who needs a reliable calculator.Energy Efficient & Anti-SlipThis cute calculator operates on one AAA battery (not included) and automatically shuts off after 10 minutes or more of inactivity, saving energy and power. Equipped with 4 non-slip pads rims to provide extra friction and stability on a variety of surfaces for quick presses and calculations.Ergonomics DesignThe desk calculator features a typewriter style design with clean lines. Retro rounded keys fit easily in your hands to prevent fatigue. Spring-loaded ergonomic design cares for your wrists. Made of durable ABS material, it feels good in your hand and is lightweight, suitable for both desktop and handheld use.Mechanical Switch CalculatorThe mechanical switch buttons are used similarly to a mechanical keyboard, providing fast and precise response. A distinctive clicking sound is emitted with each press, providing a pleasurable and addictive experience.Large LCD Display desktop calculator has a large 12-digit display, 4 inches, which makes calculations and reading clearly visible from any angle and very convenient and comfortable. The display is also designed with a 15 tilt for optimal visibility and stability, effectively reducing reading fatigue.