Innovated water cooler fits with today's modern offices. Eliminates the hassle of 5-gallon bottles. Key features: ¡¤ easy replacement of filter -built-in filtration system is easily accessed for replacement ¡¤ auto uv sterilization -prevent microorganism caused by second contamination by circulating the treated water ¡¤ leak detector -protecting a customer property by sensing even small amout of leaking water in the appliance.