Quick overview from the supplier:
Cable HDMI - 20m - Brackton "Professional" K-HDE-BKR-02000.BS,20 m,High Speed HDMI® Cable with Ethernet, male-male, up to 2160p 2Kx4K, 3D capable, with 24k gold plated contacts, braid 100% copper,2 ferrites, dust caps, black/silver nylon sleeve
