I bought four boxes because we have a very large Christmas tree and we wanted to have a lot of dancing lights. I was so excited, the first box was perfect. There were a couple of broken lanterns in the second box, but I wasn't too concerned about that because I understand that things like this happen. In the third box, only half the filament caught fire (and we've checked every bulb and fuse and can't understand why only half the filament is lit), and the fourth box keeps going out. It will burn for a while and then just go out. I've had these lamps for a week now. The tree is already decorated, so it is currently not possible to remove and return it. It's a shame when you pay so much for these lights. Again, the first box we opened is perfect. It flickers like it should. The rest of the boxes unfortunately disappointed. Hope this doesn't happen to anyone else.