Super light, simple, easy to use 2-channel Serato DJ controller, pre-owned, in excellent condition. Comes with original box and USB cable (for data and power) and I'll throw in an RCA (for connecting to sound output) as well. The only reason for selling is I upgraded to higher-end gear and no longer need this. Gently used, and never had any problems with this. Works with Serato DJ software, and can also be set up as a MIDI controller (although I never tried this).

More details and specifications at https://www.numark.com/product/mixtrack-ii 

Does not include software disc-- who has a disc drive anymore anyway? It can all be downloaded.