A good, versatile pedal for the Fender Mustang - series of amplifiers (Mustang III, VI, V and Floor only). Very sturdy built, the whole thing made out of metal. It can be used for changing many different parameters on the amp, from volume and wah, to realtime control over delay and other effects. VERY versatile.
Mine was a little loose and kept falling down to toe-postion, but it can easily be fixed by tightening the single bolt that connects the pedal to the casing.
There's a small switch under the toe on the pedal, which will be activated if you step a bit harder on the toe. This change the function from Volume only to control over all the other parameters and effects, and back. This switch is actually a little too sensitive, and if you're not careful while using the pedal for volume for example, it can switch over to the other function.
I read about this on the manufacturer's own forum, and several people actually had this same experience. This is too bad on an otherwise very smart and well-thought-through pedal. It won't work in a live-situation unless you are really careful...
There are two led's that indicate on which function you presently are, but still, the switch is too sensitive.
Other than this, like I said, a good quality, versatile pedal.