This is a full range speaker in the 12" guitar speaker format. So far I have replaced a Vintage 30 in my Harley Benton cabinet with this. My setup is a Line 6 helix into power amp, into this cab. I now use IRs on the helix and it sounds great - that is, it sounds similar to how it sounded before, going through studio monitors.
It comes in a sturdy double cardboard box - there's not much else to say about that. There are no accessories or anything else for this, it's just a speaker.
In terms of the sound characteristics, There's a lot of low end to my ears, however nothing that can't be EQ'd to taste, this might be inherent to this speaker or maybe my presets were bass-heavy before. So be prepared to tweak a little bit, but I think this is expected for any new setup.