Not really magic, but I found is a great idea, and I am bluffed by the technic. I don't know if it's expensive or not, they don't communicate the price yet. The principle is simple it condenses moisture from the air with a hydrophobic surface, and thewater is filtred befor to fall in the bottle, the battery can be reloads by a solar panel. I have just a simple question; in jungle or in the woods the humidy is important, but in a desert ? 😉