Features:

Refurbished (see below for description)
Precision aluminum unibody enclosure
Mac OS X version 10.9.4 pre-installed
Intel Core i5-4278U 2.6GHz dual-core processor
3.6GHz Max Turbo Frequency, 3MB L3 Cache
8 GB DDR3L SDRAM
256 GB SSD hard drive (Solid State Drive)
No optical drive
Intel Iris 5100 Graphics
Integrated audio with built-in stereo speakers
Built-in omnidirectional microphone