Apple MacBook Air 11.6-Inch Laptop Core i5 1.6GHz / 4GB DDR3 Memory / 128GB SSD (Solid State Drive) / OS X 10.10 Yosemite 1.6 GHz "Core i5" 64-bit processor / Brand New Authentic 45W MagSafe Power adapter 4GB DDR3 1333MHz memory / 128GB 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 / iSight Web Cam