This Duster practically does the work for you, Makes dusting faster, easier and more fun than you ever imagined! Different Sizes Feather Brush Dusters That Spins Automatically With The Help of a Rotating Motor Feature: Product material: High Quality plastic touch / fiber / cleaner. Uses 4 AA batteries (not included). For intended use only. Turn battery cap counterclockwise to open. Pull out the battery holder to insert 4 new AA alkaline batteries. Insert the battery holder so that the green arrows on the battery holder and the power handle are aligned. Turn battery cap clockwise to close. Do not mix old and new batteries. Do not mix alkaline, standard, or rechargeable batteries.