Now is this just for fun.. or does it really work.. and for what purpose..?? surely folks don’t need a blue or red LED light to show them. .if the water was cold or hot eh..? No batteries needed.. as it is powered by internal turbine. And it’s not hard to install.. at $39.99 .. not too ex either. So if you are into .. ultra geeky stuff.. go right ahead.. and buy it.
