The HP-10BII PLUS delivers powerful financial, statistical and trigonometric functions. The 10 new functions include Trigonometry, Hyperbolics, Perm/Comb, Depreciation, Bonds, Breakeven, Algebraic Hierarchy, Random Numbers, Date Calculations, and Pro bab probility Distributions The HP-10BII PLUS has dedicated keys for commonly used finance functions, and it's New, faster processor delivers immediate results. This model is ideal for accounting, business, economics, finance, real estate, intro math/science, and statistics courses. Approved for use on same exams as HP-10bii . More functions "Enhanced user experience " and has the same keystrokes as the 10bII.