Glossy wide screen displayOperating system: Mavericks 10.9Display: 20.0-inch Widescreen - Native Resolution is 1Webcam: Built-in iSight video cameraProcessor: Core 2 DuoMemory: 4GBHard drive: 250GBOptical drive: 8X SuperDrive with 4X double-layer burning (DVD+R DL/DVD?RW/CD-RW)Networking: 802.11a/b/g/nPorts/interface: Three USB 2.0 ports, one Firewire 400 port, and one Firewire 800 port (7 watts each)Battery/power supply: Power Supply, no batteryModel: MA876LL/AIncluded items: Bornd Water Resistent Wireless Keyboard and Mouse ComboDimensions: 18.5 x 19.1 x 7.4Weight: 20 lbsComputer Memory 4 GBAudio Card Type OnboardHard Drive Memory Type Hard Disk Drive (HDD)Installed RAM 4 GBMulti-Core Technology Dual-coreNetworking Capability Wireless (Infrared)Processor Brand Core 2 DuoDimensions 18.5 x 19.1 x 7.4