Construction Calculator, Portable, Length 5 5/8 in, Width 3 in, Depth 5/8 in, Display Digits 11, Display LCD, Display Dimensions 3/4 in H x 2 9/16 in W, Print Speed Not Applicable, Ink Type Not Applicable, Studs, Board Feet and Cost Per Unit, Quick Linear, Area and Volume Calculations, For Contractors, Trades People, and Estimators, Auto Shutoff, Memory, Paperless Tape, Power Supply CR2016 3V Battery, Solar, Includes Protective Hard Cover, Batteries