Now playing: Watch this: Sony's giant 84-inch 4K television

Sony has unveiled two of its biggest TV innovations of the year, and they're both inside the new XBR-84X900: it's the company's largest screen to date, and it's one of the first to feature 4K resolution.

The XBR-84X900 is the company's first 4K screen, and comes in the single 84-inch size. It's an edge-lit LED-based LCD TV that features passive 3D (another first for Sony) and comes with a 10-driver stereo speaker system.

For more information, check out our first take of the Sony XBR-84X900.