The FX-260 Solar II scientific calculator is an attractive choice for students and professionals. It features a 10-digit display that is large enough to handle decimal, trigonometry, exponential, and statistical functions in addition to hundreds of other math functions. True to its name, the FX-260 Solar II is solar-powered, allowing you computational access without the hassle of losing power in times of greatest need. This calculator comes in a light-weight, portable case. Black. Power Source(s): Solar; Display Notation: Numeric; Number of Display Digits: 10; Display Characters x Display Lines: 10 x 1.