Battery Operated Electric Duster powered by 4pcs 1.5V AA batteries(NOT included), one button ON/OFF, easy to operation. 2 Duster Head Switchable comes with 2 types of duster brush head for conveniently usage and various cleaning tasks. Compact Sturdy Duster solid PP ergonomic handle ensures comfort grip to reduce fatigue even after long period of working. 3 Length Adjustable equipped with 2pcs connecting rod, which allows you to extend the duster into the desire length as needed. Wide Applications help to clean dust on the ceiling fan, keyboard, TV or computer monitors, window-shades, and more.