Model 13 inch of Apple MB991LL/A includes built-in notebook battery up to 7 hours for wireless. 2.53 GHz Intel Core 2 Duo processor (with 3 MB L2 cache and 1066 MHz front-side bus), which runs applications faster and more efficiently as well as helps to reduce power requirements and save on battery life and video is powered by the NVIDIA GeForce 9400M integrated graphics processor, which provides an outstanding everyday graphics experience with up to a 5x performance boost.
      Other hardware features include a 250 GB Serial-ATA (SATA) hard drive (5400 RPM), 4 GB of installed RAM (which can be upgraded to 8 GB), an 8x combo Superdrive (for burning dual-layer DVDs as well as CDs), built-in Gigabit Ethernet for high-speed networking, Bluetooth 2.1+EDR (Enhanced Data Rate), FireWire 800 port, Mini DisplayPort video output (for DVI and VGA connections) and a Secure Digital card slot for easy access to digital photos and audio stored on SD and MMC memory cards.
      It comes pre-loaded with Apple's Mac OS X 10.5 Leopard operating system, and is ready to run the Mac OS X 10.6 Snow Leopard operating system. It also comes with the iLife '09 suite of applications, including iPhoto, iMovie, Garageband, and iTunes.
      Apple MB991LL/A Software include Mac OS X v10.5 Leopard (includes iTunes, Time Machine, Quick Look, Spaces, Spotlight, Dashboard, Mail, iChat, Safari, Address Book, QuickTime, iCal, DVD Player, Photo Booth, Front Row, Xcode Developer Tools). Apple MB991LL/A has measures 12.78 x 8.94 x 0.95 inches and weighs 4.5 pounds (including battery).