YIZAN USB Vacuum KEYBOARD DUST cleaner for Laptop PC Computer - Family Office PC keybard cleaner tool-blackTwo switch levels-slide the switch to the first level to turn on the LED light,slide the switch to the second level to turn on the vacuum cleaner.No need external power source, just plugs straight into any USB port.Material:？Plastic？+？metalPackage Content :1 X USB Vacuum KEYBOARD DUST cleaneNote:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.