ECOVRCS 3ft High Speed HDMI Cable Supports Ethernet 3D, 4K*2K, Audio Return, 10.2Gbps, 2160P (Black OD:5.5mm) Center conductor: high quality digital signal delivered by oxygen-free copper, Transmission speeds of up to 10.5Gbps Insulation: Using foamed PE as the insulation, ensure image quality and transmit image signal with stability. Inner shield: 100% Aluminum/Mylar foil shield, prevent high frequency noises and interference Outer shield: 95% copper braid shield, prevents most low frequency noises and interference. 24K gold-plated connectors to ensure superior signal transfer and lifetime of maximum performance, High density triple shielding for maximum rejection of EMI and RFI, suitable for HDTV, home theater, DVD player,projector,PS3,XBOX 360 and other HDMI devices.