That's the OE style bumpboxx. I purchased mine when they were all the rage on here. Ever since the departure from the community I have tried to blow it up and can't. It's still going on the original battery..lol. Mine has been a tough mono box
I don't get it out much anymore since my relationship with my cranky neighbor took a dump. It's just too loud. Only a few occasions where I can use it. Mostly social events.
He is about to go into a retirement home. When he leaves I may get it back out again..lol