Acer Aspire E5-571P Touchscreen 15.6-Inch Laptop - Intel Core i5 Processor, 4GB Memory, 500GB Hard Drive, Windows 8.1, Midnight Black 4th Gen Intel Core i5-4210U processor, Intel HD Graphics 4400+Bluetooth 4GB DDR3L SDRAM Memory, 500GB Serial ATA hard drive (5400 rpm) 15.6" LED-backlit high-definition widescreen touch-screen display Windows 8.1 64-bit operating system, 6-cell Lithium Ion (Li-Ion) Note: Optical drive not included; external drive can be purchased if necessary