Nice design - 12-digit display, large digits are easy to read, large sensitive keys for simple calculations. Double Power Calculator - Solar Powered, Energy Saving and Environmental Protection environment. Durable silicone button - good sense of touch, ABS plastic material, light weight. Reasonable configuration and comfortable operation. Perfect for home and office - performs common calculations as well as various financial functions, ideal for adults and students. Mengshen Solar Calculator with large 12-digit LCD display, specially designed for finance Vertical LCD display helps prevent glare and eye fatigue, while the display gives clear and precise numbers, even in low light conditions. Solar power and battery power means you can always finish what you want, whenever and wherever you are, so you don't miss a step. < /p> Features: Material: Plastic + Electronic Components < /p> Size: 200 * 170 * 30mm / 7.8 x 6.7 x 1.1 inch Two-way power: solar / battery < p>Ideal for office, home, school backpacks, shops and cars Functions including: multiply, divide, add, subtract and percentage< /p> Package Contents: 1x CalculatorNote: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.