Sony VAIO VGN-NW310F/B 15.5-Inch Laptop (Black) 2.2GHz Intel Pentium Dual-Core T4400 Processor (1MB L2 Cache; 800MHz Front Side Bus) 4GB (2GBx2) DDR2 800MHz Memory; 8GB Max 320GB 5400RPM Serial ATA Hard Drive; DVD/CDRW Optical Drive; 802.11 b/g/n Wireless Connectivity 15.5" (1366x768) Widescreen LCD Display; Intel Graphics Media Accelerator HD Windows 7 Home Premium (64-bit); Up to 4 Hours of Battery Life; Built-in Camera & Microphone