"Specifications 12 digits Regular percent Regular percentage calculations. Solar & Battery Solar powered when light is sufficient, battery powered when light is insufficient. Key rollover Key operations are stored in a buffer, so nothing is lost even during high-speed input. Extra Large display Larger display makes more data easier to read. Plastic keys Designed and engineered for easy operation. Mark-up All the mark-up capabilities of an adding machine for simplified cost and profit calculations.Size of case / Total weight Dimensions (D W H) : 175 126 35 mm"