The Ring Automatic Digital Air Compressor will quickly inflate your tyre to the pre-set pressure. If starting from flat it can inflate a 13" tyre in 3 minutes. For larger tyres it will take long but will still be quick. It also has a built in Inflator / deflator for inflating air beds or other kids toys. To power the compressor and Inflator a built in cable with a standard 12v cigarette lighter socket has been fitted and the long cable is tidied away in the back of the unit. There is also a storage compartment for the different connectors as well. The compressor also come with a handy carry case and keeps everything safe and sound in the boot of the car.