iMac7,1 (2007)
2 GHz Intel Core2Duo
6 GB 667 MHz DDR2 SDRAM
1 TB HDD
20-inch Screen (1680 x 1050)
ATI RadeonHD 2400 XT 128 MB
CD/DVD SuperDrive (read/write)
Mac OS 10.9.1 (Mavericks)
Full specs @ EveryMac (link)
Cosmetically clean & well cared for; some general scratches that come from normal use. Screen is like-new. Does not include keyboard & mouse, but if you need a set, let me know.