The Kool-Down Desktop Air Cooler pulls air through its evaporative water filter to blow cool moist air over your desktop, nightstand or counter. 28 oz. water tank for fewer refill trips. Two-speed air cooler has a water level gauge and an LED power indicator. The adjustable air vents pivot to direct the cool air where you want it. Non-skid grips. Adaptor included. Requires 4 C batteries (not included).