Apple MacBook Air - 13.3" - Core i5 - OS X 10.8 Mountain Lion - 4 GB RAM - 128 GB flash storage

Sure, MacBook Air is unbelievably thin and light. But they also designed it to be powerful, capable, durable, and enjoyable to use, with enough battery life to get you through the day. That's the difference between a notebook that's simply thin and light and one that's so much more.