Unistar 4-in-1 Swamp Cooler with Ionic Air Purifier, DF268. Fan/air cooler/humidifier/ionizer 4-in-1, 2-gallon water capacity Three air speed with oscillation option, Low/Medium/High Four modes selectable, normal/natural/sleeping/rhythm All features remote controllable, 0.5-7.5 hours timer 90 Days money back guarantee and 1 year limited warranty