Color: blue; Material: plastic (body), silicone (keyboard buttons); Dimensions: 86 x 55 mm (length x width); Screen size: 36 x 9 mm (length x width); Digital display: 8 digits; Power supply: AG10 button battery (included). Content: 1 electronic calculator Advantages: small size and light weight, easy to carry or store in your pocket. The buttons are comfortable to the touch and easy to use. This pocket calculator contains a button battery for long life. Auto Smart sleep does not affect daily use and is very energy efficient. Application: This large LCD screen calculator has a variety of functions that can effectively complete the calculation work for all world. Its simple and versatile appearance is suitable for business, office, home or basic computing occasions. This beautiful little calculator can be a gift for someone who likes mathematics or working in the office. Description: The calculator already contains a battery of buttons, so you can use the calculator directly to perform calculations when you turn it on. Note: Please allow slight color difference due to camera or lighting conditions. As measurements are made by hand, the sizes shown may vary slightly.