◀ ▶● The 3D Active Glasses may not work properly if there is any other 3D productor electronic devices turned on near the glasses or TV. If there is a problem,keep other electronic devices as far away as possible from the 3D ActiveGlasses.● Be sure to stay within the viewing angle and optimum TV viewing distancewhen watching 3D pictures. Otherwise, you may not be able to enjoy proper3D effects.● The ideal viewing distance should be three times or more the height of thescreen. We recommend sitting with viewer’s eyes on a level with the screen.● If you can not play 3D videos in some of the BD players, take out the diskfrom player and put it again, or restart the BD player.English