I use the glasses with an Optoma HD300X - Beamer. You can not just look cool one, but offers a wide field of view (which ultimately is the main thing). Ghosting I've not observed, the loss of brightness appears to be well under me. The loading times are very short, about 1/2 h to full charge after 5 hours operation. The maximum operating time per full charge I have not yet figured out, it is in any case more than 5 h (~ 3 movies). Unfortunately, the switch to turn on has no noticeable pressure point, and the feedback on the red LED comes slightly delayed so that the activation device often a guessing game with me. The glasses seem to be somewhat sensitive to shock, I had no complaint for broken contacts for Shutterglas (presumably damaged in transit). At the design here could determine what still improve, so total a deduction of points. With proper care (not drop) but you should have no problems.
