Ok so this is what I got in the mail. It's got an variable 1000 mah battery, and the tank has a 1.5ohm dual (although I read somewhere on here it's actually single) cotton coil. So far in trying it out it seems very harsh, and there's not much "smoke". Can't play with it much at work... have I done something wrong in the assembly? There wasn't much to it just screw in the atomizer... changing the voltage didn't affect it .