4 Stages filtration water purifier. 1 Stage : Sediment filter for dirt removal 2nd Stage : Pre-carbon filter for odor and chlorine reduction 3rd Stage : Ultra filtration up to 0.01 micron 4th stage : Carbon Block filter for chlorine reduction and enhanced taste. Features: NO POWER NEEDED NO STORAGE TANK : Enjoy fresh and safe purified water EASY INSTALLATION : Installation fixture included (DIY ) MADE IN KOREA ** order received after 1pm will process the next day (or the next business day on Saturday, Sunday & Public Holiday) Thank you.