I gave my first one away. I couldn't get it to wick properly. I got nothing but burnt hits off of it. I saw them on sale while cruising a site, and purchased another. I filled it with juice, using whatever coil they had in there, which ended up being .7 ohms, and puffed away. I've had it for a few weeks now, refilled it numerous times, and have yet to have a dry hit. I'm really digging it.