Got it in yesterday and tried it out last night on a small quote that ran along the hairline. Definitely an awesome feeling not dragging wires around. Unit is simple to bag using clip cord sleeves (I get the big roll from Kingpin). Using it is pretty straight forward. Hold the button in to start the machine and push the button twice to change the voltage. I do think a nex generation improvement would be to be able to plug it into your computer and dial in your own voltage ranges you want b/c the lowest it will go is 5 volts and I have used machines before with really fast motors that 5 volts would be flying. So far so good for me though. I use an Inkjecta Flite Nano and the voltage presets on the watch seem to mesh well with it. Will post back some more info after I get put a good, few hour session on it.