This set includes an electric eraser and replacement erasers for efficient erasing. - Type: Electric Eraser - Color: Blue - Brand: Original - Included Items: Eraser refills - Size: Compact Thank you for viewing. The clear blue electric eraser uses one AA battery, while the others use two AAA batteries. Batteries are not included. Out of the 20 replacement erasers, 4 are sandpaper erasers. Office Office Supplies Stationery Art Supplies Stationery