The keyboard vacuum is a small size (5.9 x 6.1x2.6 inch), enables you to take it anywhere you want to clean up. DC5V 1A low working voltage is safe for working,the motor speed will run from low speed to high speed.It is very convenient and energy-saving.2 Different vacuum nozzles allow you to reach the tightest spaces;Flat nozzle can inhale little pieces of paper while brush nozzle can dry ash and dust. And the filter can be washed clean with fresh water, then be reused.