DESC: When you combine your KDL46W4100 with a select number of other BRAVIA audio and video products, control functions will also be transmitted via the HDMI cable. With "One Touch Play", operations that took several steps are reduced to one. Press the PLAY button on the remote, watch the audio and/or the video component(s) turn on then the BRAVIA KDL46W4100 television will turn on and switch to the correct video input...Simple...Easy...BRAVIA Theatre Sync.