This is huge. In every sense of the word. Aside from its massive size, the XBR-84X900 4K Ultra HD TV showcases unparalleled TV picture resolution that transcends watching to experiencing. $24,999.99 – At four times the resolution, it's like you're there. The largest, highest resolution picture Sony has ever produced on a TV1. With four times more resolution than Full HD, the 84″ (diag.) 4K screen contains no less than 8 million individual pixels (3,840 x 2,160)1.