- Antenna extension cable for devices with coax connection - 4 layers of screening - Fully silver-coated, copper-modulated HP oxygen-free copper wires (99.99% Cu) - HP special lines with coaxial structure - Ferrite filters - 24-karat hard gold-plated solid metal plugs - Triple protection - PE foam insulator and quadruple high-density total shield for complete elimination of interference radiation - Screening rate > 120 dB - For HDTV - 30-year warranty