Material: Plastic (Main part), Silicone (Keyboard button); Size: 86 x 55 mm / 3.39 x 2.17 inch (L*W); Screen size: 36 x 9 mm / 1.42 x 0.35 inch (L*W); Digital display: 8 digits; Power source: AG10 Button battery (Included); Packing list: 1 x Electronic calculator Advantage: It is small and lightweight, easy to carry or store in your pocket. The buttons are comfortable to touch and smooth to use. This handheld calculator contains button batteries for long service life. Automatic intelligent sleep does not affect daily use, very energy-saving. Usage: This large LCD screen calculator has a variety of functions and can effectively complete the calculation work for everyone. Its simple and universal appearance is suitable for business, office, home or basic calculation occasions. This cute little calculator can be used as a gift for people who like math or work in the office. Instruction: The calculator already contains a button battery, so you can use the calculator to perform calculations directly when you turn it on. NOTE: Please allow slight color differences due to camera or lighting conditions. Please allow slight size deviations due to manual measurement.