The spectacle itself is very good. They will turn on very well on and off. Even the loading is very good. On the negative side, that the description is ambiguous. It would have to be in it, that time can make a reset when not function and not equal believes that the glasses are broken (probably so intended!) And complained about it. After I had the problem with the 2 glasses also, I have intensively occupied myself with it, and then hit the "Reset". Meanwhile, I have 3 glasses, but all grants in order.
