Features: [Large Round Keys]: This calculator features large, round keys that provide a comfortable and smooth typing experience, reducing the risk of errors during calculations. [Mechanical Keyboard]: The mechanical keyboard design offers a tactile response for each keypress, which enhances the accuracy and speed of your calculations. [12-Digit Display]: With its clear 12-digit display, you can perform large calculations easily, making it an ideal tool for office work, accounting or student use. [Battery Powered]: Powered by a single AAA battery (not included), this calculator is energy efficient and provides long-lasting operation. [Versatile Use]: Whether it's for office work, accounting tasks or student homework, this calculator is designed to cater to a wide range of numerical computation needs, offering professional-grade reliability. Specification: Color: Purple, White, Pink, Blue, Yellow (Optional) Size: 15x11cm Weight: 145g Main Material: ABS Power: 1*AAA battery (Not included) Package Weight: 160g/5.6oz Package Size: 17x11x3cm/6.7x4.3x1.1in Packing List: 1 x Calculator