Financial calculator is designed for the general public as well as financial professionals with interactive operations for ease of use. No need to remember financial-related details or complex calculations because the simple menu prompts you through them. User-friendly “flip” calculator with easy-to-read large LCD display fits comfortably in your palm in its slim & compact case. Power Source(s): Battery; Display Notation: Alphanumeric; Number of Display Digits: 12; Display Characters x Display Lines: 12 x 2.