Bi-directional, high speed networking to IP-enabled home entertainment devices. Enables your Tv to send audio data 'upstream' to a surrond sound system with a single cable. Latest version, defines input/output protocols that will allow 3D video supporting resolutions up to 1080p. Support extera high resolutions of 4K, 4,000 lines wide by 2,000 lines high (approximately 4x 1080p video) Colour depth refers to the number of bits which represents the colours present in a single pixel. 48 bits= trillions ofcolours Extremely high capacity, allows data to be sent or received at super higher speed. Capable of delivering 120Hz to meet maximum 3D output from aBlu-Ray poviding a clear crisp picture.