If you get your hands on a reliable unit, count your lucky stars as you have a great pedal. If you aren't sure about buying this, from my personal experience I have to suggest to look elsewhere due to the quality issues.
All Red Witch 3 Models
This pedal is great for a person who wants a great regular silicon fuzz with a few more options on it to spice up some riffs and solos.
This pedal is very simple to use, two controls, volume and fuzz. One switch. The only thing specific to this pedal is the rechargeable battery which is in itself self explanatory.