Brand AppleItem Weight 1.2 KgProduct Dimensions 19.7 x 19.7 x 3.6 cmItem model number MD388B/AProcessor Brand IntelProcessor Type Intel Core i7Processor Speed 2.3 GHzProcessor Count 4RAM Size 4 GBComputer Memory Type DDR3 SDRAMHard Drive Size 1000 GBHard Drive Interface ATAGraphics Card Description Intel HD Graphics 4000Graphics RAM Type DDR3 SDRAMWireless Type 802.11A, 802.11B, 802.11G, 802.11nWattage 85 wattsOperating System Mac OS XLithium Battery Weight 25 grams