This is a very compact unit, using only a single AAA battery for power, with a built-in USB connection for downloading music. Unfortunately, that's where the compliments end.

I've found this device to be unreliable and generaly flakey. Some music files cause playback to simply freeze, requiring a "reboot" (unplug the battery) to continue. Often the unit will simply stop playing "for no reason". The tiny amount of power available from the single battery is insufficient to produce any kind of volume, even on very efficient headphones. Operating at higher volume levels (more than 3/4 of the way up) results in the unit shutting down after a few minutes. Even the most efficient external speakers elicit the same result. I would expect that all of the other MuVo TX family members are just as flakey, but this is the only one I've tried. I wouldn't recommend this unit or any of it's siblings to anyone.

I bought this before a deployment while in the Army and I loved it. No wires to mess with while downloading music and it can be add to almost any computer as a generic storage or jump drive. Very light weight, very compact, and very easy to use.

I got this as a present and it is fantastic, it can even handle my DRM protected online purchased music and the earphones are really THAT great ;)

I love the MuVo TX. I've read many reviews about it on many different websites, such as amazon, bizrate, and epinions before purchasing it, and I'm glad that I did. The only problem I had pertained to the defective earphones. I have no idea whether or not they were meant to be that way, but the right earphone stretches quite a bit further than the left one. Other that that, the MuVo TX rocks. I jog just about everyday, and it stores me enough music to last a few miles. I highly recommened it.

All i can say is that you need this. wow wow.