Features: Scientific graphic calculator, large screen, 128x64 resolution, 10+2(Mantissa + Index) display, clear show you equations, table and chart, easy access to advanced functions. Built-in 12 function modes, calculate/complex/statistics/base-N/equation/table/matrix/vector/graph/program/sequence/link, more intelligent and improve work efficiency. It comes with a sliding protective cover, which can be padded on the back of the calculator to prevent slipping, and can be covered to prevent dust when not using the calculator. With USB interface, it is used to connect the computer and calculator. It can upgrade the software of the calculator and control the data of the computer simulator through the calculator. Powered by 4 * AAA battery(not included), which can be replaced without tool, very convenient. Power saving design, 5 minutes without operation, automatic shutdown. Made of high quality plastic, light and durable. Great for Mathematics education, science and engineering, finance, business, etc. Specifications: Color: Dark Blue Material: Plastic Screen Size: 64 * 38mm Resolution: 128 * 64 Battery: Powered by 4 * AAA Battery(Not included) Battery Life: About 1 Year(Average 1 hour per day) Consumption: 0.01W Calculator Size: 17.8 * 8.5 * 1.8cm/ 7.0 * 3.3 * 0.7in Calculator Weight: 132g/ 4.7oz Package Size: 19 * 13.3 * 5cm/ 7.5 * 5.2 * 2.0in Package Weight: 368g/ 13.0oz Packing List: 1 * Calculator 1 * User's Manual