I guess you ask for this when you look at the price, but the plastic box is flimsy, the inputs crackle, and most of all it takes ages to read the note you are playing so you can tune... especially on a bass or with drop tunings.
I don't quite enjoy using this one as much as my boss one. This is my backup just incase my boss one does not work.
But as far as the pedal itself, not much to say other than it does it's job. I've had troubles as far as tuning the bass on it with the E String. Hm.