When you are on the move, don't be tied down to a household power outlet for your electrical power needs. The Stanley Professional Power Station combines four usb ports with a jump-starter and 120 PSI air-compressor. Whether you are headed to the beach, campsite or tailgate party, you can power up and recharge your personal electronics for up to 10 hours. Charge laptops, tablets, cell phones, MP3 players, radios and more. If you are stranded on the road with a dead car battery, you don't need another vehicle, just jump-start your battery instantly with this power station. The Stanley 120 PSI compressor fills vehicle tires, bicycle tires and sports equipment with ease. It has a low- profile, anti-roll design for a more stable base when being transported.