If you enjoy listening to music in the shower, you have a few options. One is to put a radio of some sort out by the sink. That’s good and all, but you don’t have the ability to adjust the volume or change stations. There are ones that you can stick in the shower, but you have to deal with batteries, since you obviously don’t want to run a power cord into a place full of water. Neither is a perfect solution, which is why the H2O Shower Power Radio was brought into existence.
This shower radio is rather unique, in that it’s not just waterproof, but it actually draws power from the water you’re already using. It hooks into your existing line water line, and generates power from the flowing water. It even stores up energy so that the radio doesn’t cut out once your shower is over. The biggest downside is that you’ll need to likely do away with your existing shower head. That’s alright though, as for the $56 price, they include one for you.
Source: H2O Shower Power Radio