SODIAL(R) Romantic 4 Mixed-color LED Shower Head Bathroom Sprinkler No batteries and external power supply, it will illuminate after water flows down. Automatic light switching. 4 mixed-color are displayed automatically when water flow. Colors are Green, Red, Yellow & Blue. ABS & Nickeling material, excellent corrosion resistance, durable. Transforming the stream of water into a beautiful waterfall of light.