I was a KickStarter backer for this project and it's brilliant. We went to their launch party in Stockholm and on a dark evening, seeing so many floating lights was amazing.
It's an LED bulb and floats using a magnetic wooden base. It takes a little practice to get it to float, but it comes with a wooden guide to help. Should you not get it right, it automatically connects to the wooden base. So no accidental breakages.
It's not meant to give light to a room. It gives a low light cosy feel to where you place it. It spins slowly in one direction.
So, in conclusion, I have no hesitation in recommending this and other products they have since launched.
It is shockingly expensive for a light.... But it's no ordinary light. It's genuinely special and I love it! Mine arrived today and ever since I set it up (took several attempts!) I just keep staring at it, it's so beautiful!