Features of the product Day computation Calculating time Calculation of Remainder computation of taxes Sort of product tiny desk style There are twelve digits. Display of liquid crystal Exceptionally large display Signs of function commands three-digit commas Important attributes Polymer-based keys Important roles Rollover of keys Press the shift key (▶). Power supply for memory that is independent of memory Solar & Battery Dimensions (D, W, H): 147 x 103 x 28.8 mm; Weight: 115 g simple computation Simple Algebra Regular percent (％) percentage of profit margin