HP 12C Financial Calculator

Calculator with built-in financial functions and statistics
Uses Reverse Polish Notation (RPN)
More than 120 built-in functions, including register-based cash-flow analysis
10-character, 1-line LCD display
Device measures 5.0 x 0.6 x 3.1 inches (WxHxD)

Used, good condition - ding next to screen, may need batteries.