This came in and I installed it. I'll have to see how it is flying. I have decals on my bird so I was curious how well it would hold. I think it holds fine but during flight in windy conditions up there, I don't want to take any chances of it letting loose. That will down the bird quickly, so I taped it for added security. Also the leg lights snap on fine but if you handle the bird from the legs they can get popped off so I taped them as well. I installed it with the red lights in front and white in the back. This is the orientation of the colors that make the most sense to me. White gaffers tape makes the whole tape job invisible and holds very well. Extra weight seems negligible. I have turned the front phantom red LED's off and will see how it is with just the polar pro. I plan to have them blinking during day flights and hope I'll be able to see the bird better and for night flights, keep them solid on. Overall just for install, I don't think it's solid enough snap-on without reinforcement with tape. It all does snap on and stay put but the phantom is up there flying and for me, I need more than snap on. I'm doing this not for the bling, but for the practical purposes of added light for day and night flights. If it doesn't deliver that for me, I'll take it off.
Btw, this comes with a micro usb cable for charging, but no power adapter. I use my cell phone charger, no problem.