Product description Calculator can be used freely in the bright area. If the power of calculator is running out, please put it under sunshine for a while.Very environmentally and friendly. Features: This is a new 12 digit electronic calculator 100% brand new and high quality Material: Plastic + electronic components Size: 190*140*20mm /7.5 x 5.5 x 0.8 inches Two way power: Solar / Battery Ideal for use in office, home, school backpacks, shop and auto Functions includes: Multiply, divide, add, subtract, square root and percentage Package Content: 1x Electronic Calculator