samsung series 9NP900X3C-A01

The new 13-inch Samsung Series 9 is incredibly light and thin, with excellent battery life, and a bright matte 1,600x900-pixel screen.
The new Samsung Series 9 (it's even called "New Series 9" on the laptop itself) feels leaner, tighter, and less physically flexible than its 2011 predecessor. A clean, smooth hinge and an extremely thin, flat form make this 0.5 inch-thin laptop feel smaller than any other 13-incher around, including the 2012 MacBook Air.

And it is. At 2.6 pounds, the Series 9 weighs less and is slightly thinner at its thinnest point than the new Acer Aspire S5, the Dell XPS 13, or the 13-inch Air. It's not as small or light as an 11-inch Air (2.34 pounds), but it's close. Only the Sony Vaio Z, at 2.5 pounds, matches it in the 13-inch category based on laptops we've seen this year.http://www.cnet.com/laptops/samsung-series-9-13/4505-3121_7-35374674.html