I'd had this light kit for about a month now, and am very happy with it. The instructions were super easy to follow, the parts match the originals almost perfect. The cling isn't exactly the same, but no one can beat Lego in that category. The parts do fit and stay in place well. I really like the USB cable, which was my main reason for going with Lightailing, I've had it plugged in to my Playstation for the last month, and everytime the system turns on, my bug lights up. Pretty nifty, very bright. I haven't tried it with fresh batteries, so I can't say much about the battery pack. The lights were installed by an adult, and the VW hasn't ever been played with. The wires are pretty small, so I would refrain from rough handling. Perfect for a display on a shelf. If you are on the fence about purchasing a light kit for your Lego, I recommend giving Lightailing a try.
I'm very satisfied of this product. Thank you