Please charge the vacuum for 4-5 hours before you use it. The suction will get weak when the electricity is insufficient.so you should charge the vacuum again. You should check whether the entry is block and the mesh filter is full of dirty at the same time; features: 1.powerful suction: rechargeable vacuum cleaner with 2000mah li-battery provides powerful suction, cleaning dust, hairs, crumbs, scraps for laptop, mechanical keyboard, piano, makeup bag, car, pet house; 2.cordless and rechargeable: cordless keyboard cleaner with rechargeable li-battery, be free to use it everywhere after 200 minutes charging; 3.2 vacuum nozzles: 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 ; 4.filter media: providing effective filter system, you can just open the dust collector and take the filter net out. And the filter media can be washed clean with fresh water, then be reused ; 5.portable handheld size: the keyboard vacuum is in a small size (8.46 x 5.31 in), enables you to take it anywhere you want to clean up. package 1 x vacuum cleaner handle (built-in li-battery) 1 x brush nozzle 1 x flat suction nozzle 1 x cleaning gel (random color) 2 x sponge filter 1 x usb charging cable 1 x manual material: abs; noise: ≤75db voltage: dc 5v current: 1000ma rated power: 8w size: 209*137*60mm cable length: about 39.3 in power supply: 2000mah li-battery package size:15x15x6cm