ImiKas Pencil Sharpener Battery Operated, Supreme Quality with Large Shavings Tray, Ideal School Office Home Battery Sharpener, Easy Sharp Pencils for Kids Artists Helical steel blade: heavy duty stainless steel helical razor sharp blade for a superior cut and uniform finish Battery powered: this is a pencil sharpener battery operated for mobility, easily take it with you anywhere, takes 4 x aa batteries (not included) Compact yet powerful: lightweight, portable compact battery operated pencil sharpener yet comes with a powerful motor in getting the job done Safety feature: robust safety power cut off mechanism that stops this best electric pencil sharpener operating if the shaving tray is removed Free bonus ebook: an ebook on 'extensive insight to pencil sharpeners and pencils' from imikas, follow the instructions on the packaging to download