Packing: 1 pc in a blister card, 50 pcs in a outer carton.

Connection:Simply connect the Vacuum the the USB port of your computer

Component:One bristle brush & one flexible rubber

Switch Levels:The first level to turn on the LED light,the second level to turn on the vacuum cleaner.

Power:Requires no external power source ,plugs into any USB port.

Function :Vacuum the dust & other particles underneath the keyboard keys.