Display: Solar Powered Alkaline 7 Batteries (not included)Maximum number of digits displayed: 10100% brand new and high quality!Size: 15.8 cm x 7.3 cm x 2.8 cm/6.22 inches x 2.87 inches x 1.10 inchesNumber of keys: 20Name: Desktop CalculatorMaterial: ABSPackage includes: 1 pc Desktop CalculatorFeatures:Solar powered calculator: LED speed display, mechanical feel, candy-colored keyboard. Raised keys fit your fingers and are comfortable to use.Material: Solar powered calculator is made of high-quality ABS material, which is reliable and durable.Solar charging: 10-digit desktop calculator, solar powered, easy to use. Supports 1x AAA battery auxiliary charging (not included).Dimensions: Mechanical desktop calculator dimensions are 158x73x28mm. Small in size and easy to carry, it is very suitable for office or home use.Note:Please note that the pictures do not show actual size, please refer to description for size details.Please allow 1-2 cm (0.39-0.79 inches) difference due to manual measurement, thank you.