Screen Size: 13 inches Operating System: Mac OS X 10.6, Snow Leopard Processor Type: Core 2 Duo Processor Speed (per Core): 2.13 GHz Processor Configuration: Dual Core Memory (RAM): 4 GB Hard Drive Capacity: 256 GB Manufacturer Apple Model MacBook Air Processor Type Core 2 Duo Processor Manufacturer Intel Processor Speed 1.86 GHz Bus Speed 1066 MHz Display Tech LED Screen Size 13.3 in. Display Max. Resolution 1440 x 900 Expansion Ports 2 x USB 2.0, HDMI Expandability 1 x SD Card Slot Special Features Integrated Video Camera, MagSafe Power Adapter Port Networking Type Bluetooth, Integrated Wireless LAN Data Link Protocol AirPort Extreme, Bluetooth, IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n Battery Run Time 7 Hours Battery Technology Lithium polymer