7 color changes: The LED shower head"s built-in temperature sensor lets you know the water temperature while showering. No batteries or other power sources required. "power supply: LEDs are powered by tap water, which is energy efficient and environmentally friendly. Chromed ABS plastic: excellent corrosion resistance, no color fading lighting. Material: Copper. Easy to install: compatible with 2 gpm / 1 gpm, can be connected to any standard shower attachment in minutes, no tools required. Safe to use: This square LED shower has passed certification CE/RoHS/EMC/PAH, and the LED has a lifespan of up to 6000 hours. Our products are made with the splendid quality materials and are designed to provide you with the best possible user experience.