Operating System: Windows 7 Home Premium 64-Bit Optical Drive Type: DVD±R/RW Resolution: 1366 x 768 Memory Speed: DDR3 1333 WLAN: Atheros 802.11b/g/n Webcam: Built-in web camera and microphone Battery: Standard Lithium Ion Battery (5300mAh) CPU Support: 3MB L3 Cache Intel Turbo Boost Technology up to 3.10GHz