Product Description MacBook AIR 11” MD 711B Intel Core i5 1.4 Dual Core – Turbo boost up to 2.7 GHz / 4GB 1600 MHz LPDDR3 SDRAM / 128 GB PCIe based Flash Storage / Bluetooth / Camera / WIFI / Intel HD Graphics 5000 / 11” Screen / OS X Mavericks.SpecificationsBrandAppleItem Weight1.1 KgProduct Dimensions40.8 x 30.4 x 11.8 cmBatteries:1 Lithium ion batteries required. (included)Item model numberMD711B/ASeriesMacbook AIR MD711Form FactorUltraThinScreen Size11.6 inchesProcessor BrandIntelProcessor TypeCore i5Processor Speed1.3 GHzProcessor Count2RAM Size4 GBComputer Memory TypeDDR3 SDRAMHard Drive Size128 GBGraphics Card DescriptionIntel HD 5000Graphics RAM TypeSDRAMOperating SystemMac OS XAverage Battery Life (in hours)9 hoursLithium Battery Energy Content35 watt_hoursLithium Battery Weight2 Grams