I got this as a Christmas present from my cousin, and it's probably the most useful thing I've recieved all year. The HMDX-Go speaker is soooo cute, first of all, and it comes in 6 different colors (Blue, green, orange, two different pinks, and black), which is terribly awesome. I have a green one :) Then, of course, there is the sound quality. The one downside is that the speakers have no actual volume level themselves; you only can adjust the volume from your iPod/mp3 player inside. However, it still produces pretty impressive sound, with crisp, clear quality. None of that shady crackling stuff you get sometimes with other speakers.
It's battery operated, so it's portable (obviously). There's a little pouch on the inside to put your iPod in while it's plugged into the speakers, which keeps it snug and prevents it from jiggling around. It also has a little hook on it, so you can pretty much stick it wherever. I take it in the bathroom with me and hang it on the extra curtain hooks in the dorm showers so I can jam out while I scrub up. Basically, this speaker is my little buddy; it keeps me company on those long, lonely nights in the creepy photo lab, and it gives me a backtrack for my shower sessions. I absolutely adore it, and I can't believe such a tiny little thing could produce such great sound. For only $9.99, you should stop whatever you're doing and go out and buy one, right this very instant. No joke. The HMDX-Go is a great speaker at an amazing price, and I would recommend it to anyone especially teens on the move.