1,Once you got it ,you can add air to your car at anytime you want. 2,Perfect quality with decent price guarantee DC 12V,150PSI,30mm cylinder,3m cordOutput volume:35L/MINAble to inflate bike tyres,boat,athletiv balls,etsBuilt-in light is convenient for operation at nightWith on-off switch and pressure gaugePackage:1pc/color box with foam High-quality of car air compressor hs210