The product is discount for sale during china 2016 National's Day , purchase to visit : www.fondsale.com Listing Date: April 2015 Operating System: Mac OS X Yosemite CPU family: Intel Core M Series CPU frequency: 1.2GHz Core frequency: 2600MHz Three cache: 4MB Core Architecture: Broadwell Core / thread count: dual-core / four thread Process Technology: 14nm Instruction Set: 64bit Power: 4.5W Memory capacity: 8GB (8GB × 1) Memory Type: DDR3LP (low-power version) 1600MHz Hard disk capacity: 512GB Hard to describe: 512GB PCIe-based motherboard with integrated flash Drive Type: no built-in optical drive Touch screen: does not support touch Screen Size: 12 inches Aspect ratio: 16:10 Screen Resolution: 2304x1440 Screen technology: LED backlight, Retina display, IPS technology Graphics Type: Core Graphics Graphics chip: Intel GMA HD 5300 Memory Capacity: Shared memory Memory Type: None