Mr. Pen cute basic calculator makes everyday math quick and stress-free for the office, primary school, the market, and home. 12-digit display — clear, easy-to-read numbers that stay visible from multiple angles. Standard function calculator — perfect for basic numerical calculations anytime you need quick answers. Big, sensitive keys — easy-to-press buttons for smooth, fast data entry. Everyday functions included — add, subtract, multiply, and divide with ease. Percent + MU key — calculate percentages easily, including MU key percent calculations with a single press. Backspace correction — revise mistakes quickly without starting over. Compact handheld size — portable 4.6" x 2.8" design that fits neatly on desks and in bags. Battery included + auto-off — runs on one LR1130 button cell battery (included) and powers down after 8 minutes of inactivity. Light pink, cute look — adds a sweet pop of color to your workspace while staying practical.