12-digit calculator which is good for large calculation.Extra big LCD display, easy to read.Dual Power: Solar and Battery (without battery）。Ergonomic Design: Comfortable buttons, great viewing angle.Suitable for office, school, store and home use.Specifications:Model: CT-512Material: Plastic Color: BlackSize: 130×130mm/5.12×5.12in (Approx.)Digits: 12Screen: LCD Large DisplayPacking: 1 * calculatorPlease understand that due to differences in lighting or computer monitors, I cannot guarantee that the photos and actual colors are 100% the same.Due to different measurement methods, there may be a deviation of 1-2cm.