IVR15966 Features: -Amortization: No.-Time/Date: No.-Bond Calculations: No.-Confidence Interval Calculating: No.-Memory: Three-Key.-Logical (Boolean) Operations: No.-Backspace Key: Yes.-Global Product Type: Calculators-Non-Printing.-Metric Conversion: No.-Depreciation Calculations: No.-Total Recycled Content Percent : 0 pct.-Equation Editor: No.-Display Notation: Numeric.-Decimal Function: No.-Interest Rate Conversion: No.-Variable Regression: No.-Base Number Calculations: No.-Grand Total Key: Yes.-Square Root Key: No.-Graphing Functions: No.-Display Types: LCD.-Hyperbolic Functions: No.-Currency Exchange Function: No.-Time-Value-of-Money: No.-Complex Number Calculations: No.-Markup/Down Key: No.-Trig/Log Functions: No.-Pre-Consumer Recycled Content Percent : 0 pct.-Fraction/Decimal Conversions: No.-Fraction Calculations: No.-Date Calculations: No.-Percent Key(s): Yes.-Simultaneous Equations: No.-Calculator Type: Non-Printing.-Hypothesis Testing: No.-Polar-Rectangular Conversion: No.-Probability (Random Number): No.-Number of Display Digits : 12.-Percent Add-On/Discount: Yes.-Tax Calculation: No.-Matrices: No.-Loan Calculation: No.-+/- Switch Key: Yes.-Display Characters Height : 13.0 mm.-Post-Consumer Recycled Content Percent : 0 pct.-Item Count Function: No.-Display Angle: Adjustable.-Double Zero Key: Yes.-Programming Steps: No.-Linear Regression: No.-Cost/Sell/Margin: Yes.-Wall-Mountable: Yes. Specifications: -Size: 5w x 7d.-Power Source(s): 1.5V Silver Oxide Battery, Solar.-Replacement Batteries: 1.5V Silver Oxide, EVE-389BP.