--Apple MacBook Air Core i5-4250U Dual-Core 1.3GHz??11.6 LED Notebook --Grade B??(see below for explanation)--General Features: --Aluminum enclosure --Mac OS X version 10.9.5 pre-installed --Intel Core i7-4650U Dual-Core 1.7GHz CPU --3.3??GHz Max Turbo Frequency,??4 MB Intel Smart Cache --8GB 1600MHz LPDDR3 RAM --128??GB Solid State Drive (SSD) --No optical drive --Integrated Intel HD Graphics 5000 --Integrated audio with built-in speakers --Dual microphones --Airport Extreme 802.11ac Wi-Fi networking (IEEE 802.11a/b/g/n compatible) --Built-in Bluetooth 4.0 wireless Technology --Built-in 720p FaceTime HD camera --Keyboard with multi-touch trackpad --11.6-inch LED-backlit glossy widescreen display (1366 x 768 resolution)--I/O Ports: --Two (2) USB 2.0 --One (1) Thunderbolt --One (1) Headphone out mini-jack --Battery Specifications: --Lithium-ion Polymer type --38Wh--Power Specifications: --14.85V --- 3.05A --Unit Dimensions: --0.11 - 0.68 x 11.8 x 7.56-inches (H x W x D, approximate) --Weight: 2.38 lbs. WARRANTY: 90 Day WarrantyRETURNABLE: Yes