1. Dual Use: You can not only plug the air pump into the cigarette lighter socket for car use, but also plug it into a wall outlet for home use. This device works great in and out of the car. Car tire (12V), AC/DC and Home 220V power outlets are both available, 2. Various Uses: For car, inflating balls, inflatable kayak, air cushion, swimming pool, etc. Inflation and Auto Shutoff: The car tire air pump will inflate your tires in one minute to reach the standard pressure and automatically shut off after reaching. But note that in order to extend the service life, please let the 220V and 12V air compressors rest for 5-10 minutes after every 8 minutes of use. 3. Digital Display & LED Lighting: Night vision pressure measurement, built-in LED light shows great effect in the dark, 4 kinds of unit switching: PSI, BAR, KPA, KG/CM². 4.12V DC for Car: Like many other air pumps, the air pump is only suitable for vehicles with 12V DC. Please do not use it for trucks, otherwise the fuse will blow,