Acer Aspire AS5749Z-4706 15.6" Notebook Intel Dual-Core Pentium B960 4GB DDR3 500GB HDD Win 7 Home Premium Display: Acer CineCrystal 15.6" (1366 x 768) Memory: 4GB (2/2) DDR3 SDRAM, Upgradeable up to 8GB Graphics: Integrated Intel HD Graphics Communications: 802.11b/g/n WLAN, 10/100 LAN, webcam Battery: 6-cell Lithium Ion (Li-Ion) battery, upto 4.00 Hours