CASIO ・Functions Day Calculation Time Calculation Tax Calculation (Tax amount calculation and tax rate change possible) Tilt Display Large Stopper ・Basic Calculations Arithmetic Operations Arithmetic Constant Calculation Multi-Percent Calculation Square Root Rounding Calculation Product Type: Desktop Type (Convenient for desktop use) Digits: 12 digits LCD Display Silent Touch Keys (Quiet touch sound) Battery: CR2032 × 1 Battery Life: Approximately 7 years (when used for 1 hour per day) Auto Power Off Size (Depth × Width × Height) 189 × 135 × 34.8 mm Weight 281 g