... not only enjoy the water massage, but also the oxygen spa at your bathtub.With certificates of GS, ROHS, CE, LVD, EMC ,UL,SGS ... so it can be put anywhere on the bath tub.5) Adjustable spray nozzle to change stream to desired directions.6 ... to plug: 2.8M Tourmaline (ION): OXYGEN-ION TURBO SPA with CE Rohs GS,PSE,UL certificates