The Telegraph:

The H20 water-powered radio clips onto the water pipe that runs up to a shower head. Using micro turbine technology, the radio is powered by the water pressure running up a pipe.

“The radio runs on energy generated solely through the flow of water, starting as the shower is turned on. It harnesses power that would otherwise literally go straight down the drain,” said a spokesman for Tango Group, the radio’s manufacturer.

The H20 was invented by Vivian Black, a former director of Freeplay Energy Group, which helped turn Trevor Baylis’s Wind-UP Radio into a commercial success in the 1990s.

“Creating the now-patented micro turbine technology, that allows the radio to operate solely through the flow of water, was the key to our new innovation; and thus the world’s first water-powered shower radio was created.”