Red Means Hot & Blue Means Cold

I wonder if it tastes like Kool - Aid ? This is a novel idea from Hog Wild and it only cost 20 bucks. A led lights up causing the stream of water to look blue until it reaches 89degrees, then a temperature monitor changes the light to red. Not sure how long the battery lasts but given how cheap they are why not try one out. Here is a link for the product as listed on Amazon. The gadget is about 2 inches long so a deep sink or high faucet works best. It also comes with 2 sets of batteries and several adaptors to fit different sized faucets. Here is a Video of this product in action...no clue why the woman in the video is taking pictures while filming the demo. Strange choice of music too but oh well.