At this point you know pretty much all there is to know about the amazingly thin (0.6-inches), light (just 1.4 pounds or 2.2 pounds with extended battery wedge), and expensive ($1,299 base) VAIO X ultra-portable laptop from Sony. The only thing missing were tests to confirm or deny Sony's claim that the VAIO X battery lasts "all day and well into the night and will set the new standard for battery stamina," as proclaimed at its IFA unveil back in September in Berlin. A bold claim that Lapto