Hydro Breeze Bully Fan is the only misting system that is self powered and self contained with 30 gallon water tank. Now there is no need to search for water or electric source. Built -in power generator on this unit powers the entire mist system for hours. Roll in this all inclusive mist cart to the most remote location and instantly create a cool zone. High velocity 30'' Oscillating mist fan produces high volume of ultra fine mist to cool large crowds. In addition to cooling people at sporting events and outdoor festivals, this unit can also be used at construction sites and industrial locations to supress dust and odors.