Half of it is battery.
Apple has merged the Mac and the iPad. No, seriously- they even said so. Jobs even asked, "What if the Mac met the iPad?" before he announced this thing. The new Air is .68 inches thick and only .11" thick at its thinnest spot. It weighs 2.9 lbs and has a 13.3" LED backlit display and a full-size keyboard. The screen resolution is a mighty 1440x900.
Don't Miss: iPhone 8: Everything You Need to Know
The Air packs a Core 2 Duo processor with Nvidia GeForce 320m graphics. There is no optical drive and no hard drive- this thing is 100% solid-state. It has instant on and a 30-day standby time with full battery life. Half of this thing is battery- and there's an 11.6" model that weighs only 2.3 lbs but has identical hardware.
Don't Miss: Sam's Club Black Friday 2016 Details