Colors will be displayed automatically and change: 7 colors will be mixed and changed automatically when water flows. No batteries and need other power supply: These LEDs are eliminated by running water, energy saving and environmental protection. ABS chrome plated material: Excellent corrosion resistance and the light will not fade, lasting as new. Easy installation: Suitable for 2 GPM/1 gprm, installed in minutes with standard shower arm and above, no tools required. Safe in application: This top shower head passce/RoHS/EMC/PAH and LEDs have a long lifespan up to 6000 hours. for bathroom Features: No batteries, no wire required. Fits all standard connectors, easy to install. The light is activated by water pressure and automatically turns off with water. Colors will be automatically changed when water flows (bright colors are not affected by water temperature). Water flows in a beautiful waterfall or constant light. Gives you a beautiful bath and wonderful experience. Ideal for