much better than the version provides batteries with TV

even with the 2014 smart TV 4K always has the same spectacles batteries, they will have a larger viewing angle, I mean that the screens glasses are much greater, for they are against careful screens, they can break, unlike the passive glasses, therefore handle with precautions, uen load take 30 minutes if it is a flat but it takes 40 hours easy, Just load 2 minutes if she died to see a movie of two hours .. . perfect, only downside, unfortunately they are not pliable, it's really annoying because they take up space and have no hard case, I could mettere them in a small bubble bag, for storage, and ACES is delicate in USB ports for charging. but frankly a take urgent if using pairs given with the TV batteries.