Designed by Yichun Chuang, the OLED underwater lights look as beautiful as real pebbles while staying in water. The only difference is that they can light. Embedded with OLEDs, they get power for lighting from water currents, which can activate a very tiny nano generator in the light by running through tiny holes connecting both ends. Such underwater lights are perfect replacements for traditional lighting setups as they are energy-efficient, and do not heat up or leave any polluting effluents. What is more attractive, these OLED lights are portable and do not require special installation that is always needed for common LED lighting such as LED panel light, and they do not even need power supply—you can just throw them directly into water to decorate your pool or aquarium.
http://www.imigyled.com

It is amazing.
OLED technology make the world more beautiful.

Yes, these pebble underwater lights are really looking beautiful. And if you are also looking for those lights to add in your swimming pool or garden, here is the link : http://www.directlight.co.uk