Apple MacBook Pro MD318LL/A 15.4-Inch Laptop (OLD VERSION) 2.2 GHz Quad-Core Intel Core i7 Processor 4 GB 1333MHz DDR3 SDRAM 500GB 5400rpm Hard Drive; 8x DVD/CD SuperDrive 15.4-Inch LED-backlit Display, 1440-by-900 Resolution; AMD Radeon HD 6750M with 512MB GDDR5 Mac OS X v10.7 Lion, 7 Hour Battery Life