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Hi Jake, Thank you for the inquiry. The KD43X85J supports features specified in HDMI 2.1 like 4K120, eARC/ARC, ALLM, and VRR(VRR will be available via a future firmware update). To support a 4K 120Hz signal from another device, you will need to set the TV HDMI Signal Format to an Enhanced format for your source device to recognize the 4K 120Hz capability of the TV. Make sure your device is connected to the HDMI 3 or HDMI 4 input on the TV using the supplied Certified Premium HDMI cable. Select Settings → Watching TV → External inputs → HDMI signal format. Select the input the device is connected to (either HDMI 3 or HDMI 4), and then change the setting to Enhanced format. I hope this helps! Jay
Sorry, there was a problem. Please try again later.It will do 4K OR 120hz. It will not do both at the same time. Both look great. But for the price, you're not getting what you're looking for.
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