This Crumb Sweeper Desktop Mini Vacuum Desk Dust Cleaner with cute beetle design, can remove the dirt caused by eraser, the cigarette ash or dust on the office table, clean the cushion or interior of cars. The cleaner can clean dust or bread crumbs on your desktop and laptop effectively. With keyboard brush, it can remove the dust on the keyboard easily. Simple operation. Place batteries and turn on it then it works. Power supply: 2xAA batteries (Not include) Size: about 10.5*8*7 cm(L*W*H) / 4.1*3.1*2.8 inch Note: If the battery will not be installed after receiving the goods, you can see the operation in the picture.