Glasses much cheaper than those sold by Panasonic, it nevertheless has the disadvantage of not being closed on the sides: so do not flare (use instead the evening in the dark). The batteries do not last very long, but not very expensive on amazon. I bought to test 3D on my TV before investing in real glasses pana, but ultimately it does not interest me, being a film buff, I find that 3D brings nothing really transcendent to the picture, and therefore much prefer movies in 2D.
