School Smart 8 Digit Calculator features automatic constants gross profit margin and percent keys The 3 key memory and has a large LCD display Measures 5 x 4 1 4 x 1 1 8 inches Features . School Smart Large Display 8 Digit Calculator Black Specifications . Color Black. Safety No Choking Hazard. Allergens Contains No Allergens. Battery Size LG10 L1131. Solar Powered No. Weight 0 17 lbs