Thank you for viewing. This is a Casio MJ-12VC 12-digit calculator. It's a rare overseas version with a check function. You can review and correct calculations up to 150 steps. It looks cool because there are no Japanese characters. Thank you for your consideration. Basic calculations Constant calculations Multi-percentage calculations Check function (150 steps) Tilt display Calculation status display 3-digit comma separator Fast key input (2-key rollover) Double zero (00) key Sign change key Independent memory (M+, M-, MRC key system) T·W·P (Solar and battery dual power) Battery: LR1130 x 1 Auto power off Dimensions: 144 x 105.5 x 26.2mm Weight: 110g