The 'N' in Sony's NX series of LED TVs stands for Network. This means you'll be able to stream media wirelessly from PCs around your home and access a wide range of web content, all from the comfort of your sofa.
The NX series is the step up from Sony's Cinematic (HX) and Essential (EX) ranges, but below the more luxurious Signature (LX) range. There are a grand total of nine sets in the NX series, of which two have the 713 suffix – the 40-inch KDL-40NX713 and the 46-inch KDL-46NX713, reviewed here.