Lenovo 15.6" Windows 7 Professional Business HD Laptop | Intel i3 Dual Core | 4GB RAM | 500GB HDD | WiFi | Bluetooth | upgradable to Windows 10 Pro 15.6" Anti-glare Widescreen HD display LED backlight (1366 x 768), Aspect Ratio: 16:9, Intel HD Graphics 4400 Intel Core i3 i3-4005U Dual-core (2 Core) 1.70 GHz, 4 GB DDR3L SDRAM RAM (expandable to 16GB), 500GB SATA hard drive 802.11 b/g/n Wiireless, Bluetooth, Media card reader, Built-in Web Camera with microphone, Stereo speakers with Dolby Advanced Audio v2 USB 2.0, USB 3.0, Headphone, Microphone, VGA, HDMI, Ethernet port Microsoft Windows 7 Professional 64-bit Edition / Windows 10 Pro 64-bit Edition downgrade, Black