Running OS X Yosemite
13.3-inch retina display (1280x800)
Aluminum body in excellent condition
Processor: 2.8 GHz Intel Core i7 processor
Memory: 4 GB 1333 MHz DDR3
Storage: 750 GB SATA Disk
Graphics: Intel HD Graphics 3000 384 MB
Selling because I need a Windows operating system. If my Mac could run the programs I needed it to, I wouldn't be selling it. It's a great and fast laptop that upholds the Apple reputation well.