Original Brandnew for MacBook Air Notebook 13.3-Inch Intel Core i7 1.8GHz dual-core 4GB RAM 256GBHDD Designing MacBook Air came with one goal: Create an incredibly thin and light notebook computer that's every bit as powerful and capable as one twice its size. With flash storage, durable unibody construction, Multi-Touch technology, and a long-lasting battery, MacBook Air not only achieves that goal, it sets a new standard for what every notebook should be. Perfected down to the millimeter. P rocessor Core i7 Dual-Core Proce ssor Speed 1.8 GHz Hard Drive 256 GB Hard Drive interface type Solid State RAM standard 4 GB DDR3 SDRAM Display 13.3 in Display, maximum resolution 1440 x 900 Mac OS X Lion