Material: Plastic Size: 14.5*15.5cm / 5.66"*6.04" Color: As shown 1. High-value mechanical keyboard design, dopamine color matching enhances the pleasure of office and learning, creating a personalized desktop experience. 2. A silent mechanical keyboard calculator designed for students and office people, comfortable input, low noise, and improved efficiency. 3. Built-in multi-function calculator, supports fast data calculation, suitable for finance, statistics and daily office use. 4. RGB backlight adjustment function, adapted to different ambient light requirements, more eye protection and more efficient use at night. 5. Compatible with multiple system platforms, plug and play, suitable for a variety of office and learning scenarios. Package includes:1pc Dopamine Calculator