When water flows down the LED will light instantly and automatically; 7 color changing gradually and automatically not subject to the temperature of water; Fashion and practical good to give you a cheerful mode release stress and dispel fatigue; Self-generation by water flow no need battery energy-saving long life up to 6000 hours; Motor: High speed strong magnetic motor ensure the LED lights as low water pressure; Inner core: Advanced totally-enclosed structure not rust during the long time touch with water to ensure the motor works stably and efficiently