3D Over Hdmi， Hdmi Ethernet Channer， Dual-Stream 1080P， Auto Lip-Sync， Compatible With Backward Hdmi Versions (1.3， 1.2， 1.1)， 4K x 2K Video Support， Audio Return Channel， 24K Gold Plated Connectors， High Purify Oxygen Free Copper， High Density Aluminum Foil Shield， Hdmi Atc 1.4A Certificated Ul/Ce/Fcc/Rohs Certified