Portable, decent volume and sound quality. Easy to hook in any instrument or midi device and the ability to run headphones back out from the speaker is a nice feature to use in a more personal or less intrusive way.
This was easy enough to solve and I had a proper cord I was able to find on-hand. I also must mention this is stated within the listing as well.
I am using with midi keyboards, loopers, synths, and the like and it works perfectly for this. I'm basically using as a studio monitor and it's fine for that. Other uses could include karaoke or mic inputs.
For what it is at the price it is offered I think it is a fair price and it has the features and specs I would expect. Portable and small enough that it is unintrusive, yet substantial enough to use for the purposes listed.
For size comparison I've added a couple pictures/measurements and a Zippo lighter for scale.