Perfectly portable Sharpener works with all wood and recycled pencils. And it won't operate without the shaving receptacle. Dependable, powerful motor has automatic on/off. Uses 4 AA batteries (not included). Boston Pencil Sharpeners part of a large selection of office supplies. Boston(R) Battery-Operated Sharpener, Black is one of many Electric/Battery Operated Pencil Sharpeners available through Office Depot. Made by Boston.