I got one in a trade, got to use it for one day.
My charger for that batt wasn't making good contact, so I emailed Jazz to see if unit would charge
with an Ego batt charger.They replied that they hadn't confirmed it, but yes, a user had told them
it would work. I took a risk and tried it. Thought it had worked until I went to use it. No go, the switch
was fried. It was firing continuously when I tried to screw in a carto. Now I can't afford to get another
switch right now.
It worked well for the one day I got to use it. Didn't feel overly large in my hand.
Just make sure to take batt out and use regular charger.