Sony Vaio VGN-SZ780DN/ Intel Core 2 Duo T8100 2.1Ghz/ 2Gb DDR3/ 250GB/ 13.3 inch/ nVidia 8400M GS/ DvDRW+/- Double Layer/ Bluetooth Integrated Stereo A2DP (2.1 + EDR)/ Integrated 10/100Base-T Ethernet LAN/ build in Webcam and Microphone/ Intel® 802.11b/g/n/ Vista Business/ 2.4kg/ 6-cell lithium-ion battery/ [sound]Integrated /[sound] 3 USB / 1 external VGA monitor / 1 HDMI / 1 stereo microphone in / 1 stereo headphone / line-out 1 AC power / 1 RJ-45 / 1 eSATA / USB 2.0 Combo/