E Series brings pure in appearance, features aqua blue accents on its sides, keyboard, and touchpad. Also it has the distinctive wrap design. Live it up with the long battery life and the high quality sound produced by Sony’s "xLOUD" and "Clear Phase" technology Intel® Core™ i5-2450M Processor 2.50 GHz with Turbo Boost up to 3.10 GHzGenuine Windows® 7 Home Premium 64bitHDD: 640 GB (Serial ATA, 5400 rpm)Bundled "Personalization Kit" with matching Keyboard skin and MouseHigh Audio Quality with "xLOUD", "Clear Phase" and Dolby® Home Theater® v4Rapid Wake + Eco: quick resume, longer battery life and data security ID DISP014