4 LINE DISPLAY; 10 PLUS 2 DIGITS; SIMPLE & COMPOUND INTEREST CALCULATION; DOT MATRIX, INVESTMENT APPRAISAL (CASH FLOW) & AMORTIZATION; CONVERTS BETWEEN PERCENTAGE INTEREST RATE & EFFECTIVE RATE; DAY CALCULATION, DEPRECIATION & BOND CALCULATION; BREAK EVEN POINT CALCULATION; COST/SELL/MARGIN STATISTICS; SLIDE-ON HARD CASE; SOLAR PLUS WITH BATTERY BACK-UP;