Depending what device you are watching on determines weather you need passive or powered(batteries) glasses. I have 3d on my LG and use passive glasses but most other brands require powered glasses. Got on line and research or go to best buy with your device, They will have the glasses you need in stock. Be warned if you are passing signal over hdmi you need to upgrade to version 1.4 3d compatible cables.Where do u get the special glasses?
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