◀ ▶English● The 3D Active Glasses may not work properly if there is any other 3Dproduct or electronic devices turned on near the glasses or TV. If there is aproblem, keep other electronic devices as far away as possible from the 3DActive Glasses.● Be sure to stay within the viewing angle and optimum TV viewing distancewhen watching 3D pictures. Otherwise, you may not be able to see 3Deffects properly.● The ideal 3D viewing distance is three times or more the height of thescreen. For example, if your screen is two feet high, you should sit at leastsix feet from the screen. We recommend sitting so that your eyes are levelwith the screen.