Used Bose SoundDock Series II in very good condition. Occasionally used for couple years and its sound is just amazing.

I still have original box and whatever came in the box when I bought it. (dock, remote, power cable and manual)

Spec can be found from Bose's webpage.
http://www.bose.com/controller?url=/shop_online/digital_music_systems/sounddock_systems/sounddock/index.jsp