It features a digital LCD pressure gauge that has an auto stop that can be set to stop at the proper pressure, and prevent over filling. It also digitally reads the pressure.it is designed with the rechargeable Lithium battery, and also can be use without battery, just plug into your car cigarette lighter for power, slip universal adapter over tire valve and be ready to inflate.The air pump is designed with several air nozzles for a wide variety of uses: tires, inflatable toys, sports equipment, bike tires, air mattresses and more. It is a solid durable tool that you will use all the time.