Main Features: - Powerful suction can more quickly suck out the garbage hidden in the keyboard.  - Our computer vacuum cleaner is able to suck small things like cigaretteash, dust, Hair, food-crumbs, eraser.  - Residue, Small particle, but not water, please make sure small things is not bigger than the suction nozzle.  - This portable handheld USB vacuum cleaner is small size, could be used for computer, desktop and PC.  - Our keyboard vacuum cleaner can be plugged straight into USB port without requiring external power source.  - Just open the vacuum cleaner and take the sponge net out, then wash it with clean water, after the sponge net get dry, then you could use it.  Specification: Type: Wireless/Wired.  Color: Black.  Voltage: DC 5V.  Power: 5W.  USB Cable Length: 1.8m.  Power Supply: USB.  Battery Information: Battery Type: Li-ion battery.  Battery Capacity: 2000mAh.  Dimension: Product Weight: 0.2kg.   Package Weight: 0.4kg.   Product Size: 19.60 x 13.70 x 6.00 cm / 7.72 x 5.39 x 2.36 inches.   Package Contents: 1 x Air Duster, 1 x USB Cable, 1 x Manual.