i gave 4 stars because while these are very cool lights they are extremely difficult to program and use. we bought a set of 6 and took them to use on a dj gig thinking they would be so awesome. thankfully we played with them at home first because we learned that even though you can buy them in a set of 6, you can only program 4 of the from one device, so to do 6 you have to have a tablet and a phone, or two phones, two tablets, etc... very annoying! AND... they do not seem to maintain any type of identification that makes them able to just stay in the app to be programmed the next time because we tried using two tablets, assigned three lights to each tablet, marked them, set them up and found that we had to delete all of them from the app and start over. I learned to leave the lights off, let the app find them and then turn them on from there. they are extremely light weight due to being all plastic, but if you do not have a way of transporting them, ie a hugely long bag, tearing them apart repeatly would probably result in certain damage. they arived by tge daye that was given and they were in great shape, but as per usual the instructions are very sparce. overall we love them, but we are definitely planning on buying a better set and just letting these fill the gaps when we perform.