Need strong performance with up to 8 hours of battery life3 in a 15.6" thin-and-light for your on-the-go lifestyle? Featuring battery, screen, RAM, drive and keyboard upgrades, the nightsky black Gateway® EC5409u Notebook keeps you productive all day while mobile with 64-bit Genuine Windows® 7 Home Premium, a low-voltage 1.3GHz dual-core Intel® Pentium® Processor1, 802.11b/g/draft-n wireless, 4GB of cutting-edge DDR3 memory (upgradeable to 8GB), 320GB hard drive4 and 8x DVD-SuperMulti DL drive.