With a 13-hour battery run time, the EliteBook 850 by HP optimizes its lithium ion battery across several hardware and software platforms. Imagine using the offset touchpad while running three or four windows at once, and you'll notice almost no lag time with the Intel Dual-Core processor running at 1.7GHz. As you concentrate on the 15.6-inch screen, the 16:9 aspect ratio is comfortable for several tiled program windows or a widescreen-movie experience. The full HD screen has an LED design, making the backlit illumination easier on the eyes. Take this this 3.1-inch, 6.8 poud thick laptop almost anywhere with ease. With a 500 GB hard drive, you can enjoy your videos, photos and favorite programs on the go.