DC 12V, 120 W, 100% pure copper motor, portable tyre inflator- With digital gauge and auto shut-off function. Simply set the require pressure and unit will automatically shut when pressure is reached !- Inflates a 145/70 R12 tyre from 0 to 30psi in about 3-4 minutes (we recommend the car engine running)- High quality braided heat-proof rubber air hose and 3m power cord- Anti-vibration rubber feet to prevent unwanted movement