PTC Premium Gold Series HDMI Cable (15 feet) The HDMI Ethernet Channel - Delivers ethernet data interconnectivity to compatible devices through the HDMI port Audio Return Channel - Allows the HDMI connection between a television and A/V receiver to transmit audio two ways 3D Support - Supports several different methods of rendering 3D images. 4K x 2K Support - Resolution on par with state-of-the-art Digital Cinema projectors used in the local multiplexes will be coming to your living rooms LIFETIME Warranty and free lifetime tech support.