Office Depot Financial Calculator AT-814. tax calculations: Yes. Textbook display: No. Thousands separator: Yes. Time calculation: No. Upwards function: Yes. Statistical calculations: No. Square root function: No. Sign change: Yes. Profit calculation: No. Power supply: Battery, solar. Percentage calculation: Yes. Number of digits: 12. natural display: No. Memory buttons: 3. Material: Plastic, metal. Margin: No. Grand total: No. Double zero button: Yes. Screen type: LCD. Cut-out function: Yes. Decimal selection: Yes. Currency conversion: No. Cost, sales, margin function: No. Battery included: Yes. Battery sizes: L1130. Automatic rounding up: Yes. 5/4 function: Yes. Dimensions: 133 x 34 x 184 mm (W x H x D). Colour: Silver.