✨ Calculate with Style! ✨ Includes 1 LR44 battery—just grab and go! Perfectly sized at 14.5×3.5×18.5cm for on-the-go calculations! Add a touch of My Melody charm to your workspace! Harness the sun with solar power—no more battery worries! Weighing in at just 180 g, it’s your portable math companion! 23.88 x 18.03 cm Solar Powered 180 g The My Melody Face Key Calculator by Sanrio combines functionality with adorable design. Measuring 14.5×3.5×18.5cm and weighing only 180 g, this solar-powered calculator is perfect for professionals on the move. It comes with an included LR44 battery, ensuring you're always ready to tackle those numbers with a smile!