Large 12-Digit DisplayA huge large LCD display, showing large numbers clearly, is easy to read from a distance and aesthetically pleasing. Supports 12-digit display. Dual Power Design The calculator uses both solar power and battery power (battery not included). As long as you use it in a well-lit environment, the solar panel will provide continuous power to the calculator. Sensitive and Large ButtonsWhen pressed, the buttons register quickly and display the number corresponding to the screen. The desktop electronic calculator adopts scientific large-key design, which conforms to human habits and is comfortable to touch. MultifunctionalAdd, Subtract, Multiply, Divide, Backspace, Grand Total, CE, %, M+/M-/MRC, ON/AC button and auto power off. The desktop calculator shuts off after approximately 6 minutes of inactivity. GREAT FOR HOME AND OFFICE This basic calculator is suitable for business, office, home, school or anyone who needs to do any type of math from time to time.