Apple MacBook Air 11.6-Inch Laptop Core i7 1.8GHz / 4GB DDR3 Memory / 256GB SSD (Solid State Drive) / OS X 10.10 Yosemite 1.8 GHz "Core i7" 64-bit processor / Brand New Authentic 45W MagSafe Power adapter 4GB DDR3 memory / 256GB SSD (Solid State Drive) / Backlit Keyboard Fresh installation of OS X v10.10 Yosemite / factory reset / 7 hour battery 11.6 inch LED-backlit display 1366-by-768 resolution / Two USB ports / one ThunderBolt Port Airport Wifi Card / "multi-touch" (4 finger) trackpad / Bluetooth 4.0 / iSight Web Cam