I would like to emphasize in the first place, that this is an active 3D shutter glasses for just under 15 euros. The offer or the product is aimed at those who want to in between times to see a 3D movie. An absolute high-end product can not be expected of course at the price. I use the glasses in conjunction with a Grundig 55 VLE 822 BL and yes, it works just fine. Unfortunately, it flickers a bit. But when I think of the first shutter glasses, then that's already become bearable. The completely flicker you get probably barely 100th The initial setup was a breeze. Put on 3D TV, glasses enable and press about 5 seconds on the "Search" button. Behold, the glasses chooses the necessary Hertz frequency and the 3D experience can begin. In second using just 3D and glasses on. Done. Just do not go. Also unusual in the price range that you can recharge the glasses back. Cable is the glasses. In addition, a practical cloth bag and a cleaning cloth. All "Casual 3D fans" among you beat without hesitation.