THREE-COLOR CHANGING: BLUE for go, GREEN for cold and RED for hot, FLASING RED for too hot. This product makes you feel better knowing the comfortable water temperature and offers you an amazing shower experience NEGATIVE LONIC SHOWERING SPA ENJOYMENT: With negative ion beads, the color changing shower head keeps out impurities and adjusts the Ph of water, good to your skin health POWERED BY RUNNING WATER: the LED lights are powered by water flow instead of batteries, so you are spared the cost on batteries; please be noted that low water pressure won\'t make the LEDs light up ABS AND CHROME & EDETACHBLE DESIGN: Made of ABS and chrome, the shower head has excellent impact resistance; the LED head can be detached for the purpose of cleaning in time of clogging EASY TO INSTALL: No tools are needed to install the shower head upon the hose and the installation can be done within a few minutes. Anyone can do it