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The effective refresh rate is how many time the picture is updating on the TV per second. An effective refresh rate of 120Hz shows that the TV effectively shows 120 frames every second. Clear Action increases this further to that increased rate using MEMC technology and a scanning backlight.
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You can only use second screen functionality with YouTube and Netflix. You cannot directly mirror the screen of your device.
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This TV is only compatible with a 110V-120V outlet as found in the USA.
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