4K UHD 3840 x 2160 LED Panel, HDR10 & Dolby Vision Compatibility, Built-In Wi-Fi & Ethernet Connectivity, Roku TV OS for Apps, 3 x HDMI / 1 x USB, Works with Alexa and Google Assistant, Voice Remote Control, Dolby Digital Plus. Enjoy streaming content with the push of a button with the TCL 6-Series R617 55 Class HDR 4K UHD Smart LED TV. It has a native resolution of 4K UHD 3840 x 2160 and HDR10 and Dolby Vision compatibility enable it to produce bright vibrant colors when used with compatible content and equipment. The 6-Series has Ethernet and Wi-Fi built-in allowing access to apps like Netflix and YouTube. Its three HDMI ports provide connections to HD devices such as Blu-ray players cable/satellite boxes gaming systems and more. Cable routing is simplified with all the input and output terminals located on the side. You can control the TV using just your voice with your Google Assistant- or Amazon Alexa-enabled devices or with the included voice remote control.