1.Portable size: the size of each mini calculator is about 4.7 x 2.7 inches, small and light, easy to store and carry, suitable for home and office use 2.Durable material: these pocket size calculator shells are made of ABS material, with silicone buttons, which give you a comfortable pressing feel, safe and durable 3.Battery and solar dual power supply: the electric digital calculator has dual power supply drives: button battery and solar energy, which can switch the power mode according to the environment, which is flexible and convenient 4.Fresh colors: portable calculators have fresh colors, macarons color can easy to catch the eye of people, and let you easily find the calculator in a pile of messy documents or books 5.LCD display: a portable calculator with a large LCD display for 8-digit calculations, which can clearly see the numbers and is very easy to read