My old 46 inch 3D TV uses passive 3D glasses like those used in cinemas You. my new BenQ TK800m. Now after watching two 3D movies with them I can say they work great! In combination with my projector, the 3D image is sharp and bright (for 3D). I had no issues with losing sync with these glasses. The load they came with from the factory was enough to listen to an entire Lorax Blu-ray. I've since fully charged them and expect to be able to shoot a few movies with them before needing a recharge. The processing quality is pleasant. In my hands they are as durable and comfortable as any other active 3D glasses I have ever used. I'm not worried about my kids (12, 9 and 6) using them. So far, the glasses have survived two films with them. I would say that these are good family glasses. The included case, cleaning cloth, carrying pouch, and charging cable are another nice touch that makes safe storage easier. First I bought 4 packs in black and now I bought 4 more packs in blue.
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