Apple iMac 27" Retina 5K. Late 2015 + 3.2GHz Quad-Core i5 + 16GB RAM + 2TB SSD - Technical Specifications found here: https://support.apple.com/en-us/112035
Two aftermarket 8gb ram are installed, upgraded from the standard two 4gb ram. Comes with keyboard and original packaging. No mouse included. Great condition, I'm not sure what to call the dark ghosting effect pictured on the lower left and right hand corners.