They're led panels on the inside so I don't think they're easy to change, but they're very durable. The luminosity is sufficient for our bedroom but I think it depends on the size of the room and the height of the ceiling. We're very happy with it. On the other hand, if wifi functionality is important to you, you should know that we've never managed to get it to work via their app. I'm not saying it can't be done, but in any case the CREATE app is poorly designed and we haven't managed to use it.