 I have this magnet viewer here, a magnet, so this magnet viewer allows me to visualize the magnetic field produced by this magnet. So if I move it over here you can see a black circle surrounded by a right ring. So that's a visualization of that magnetic field. Let me get a second magnet in, let them attract each other like this. And now you can see the field produced by two magnets. Now this magnet field viewer allows me to see the magnets inside, for example an iPad. So I have a magnet here on the corner and here two other magnets, that's probably from the speakers. And then here also the other corner, like this. And if I look at the cover, so I have two magnets here, one here, so it's a bit more in the cover. Here four magnets, another one in the corner and then here.