The mobi v 15 portable bike pressure washer runs off a 12 volt vehicle outlet and produces variable pressure output from 455psi to 1305psi and is quiet while in operation with its variable pressure output giving the ability to clean a dog after a walk or an mtb after a hard day trail riding the mobi v 15 portable bike pressure washer retains pressure in the hose through high tech pressure sensors so it is ready to spray when you are without any delay if you want to be prepared fo