Get the Charles Leonard Calculators, 12ct. at Michaels. com. The hand held calculator features an 8 digit display, full memory functions and non-slip rubber keys. The hand held calculator features an 8 digit display, full memory functions and non-slip rubber keys. These sleek calculators have mercury free batteries and are dual powered. Comes in an assortment of colors. Details: Includes an assortment of bright colored 12 calculators 8-digit Handheld | Charles Leonard Calculators, 12ct. | Michaels®