“I purchased 3 of these pens. All three are defective. After a few puffs, all three seemed to stop working. The light at the tip of the pend now just blinks, and there is no vapor coming out of the pen when I inhale. It seems the battery does not have enough power to sufficiently heat up the oil to produce var. Two of the pens are still half full of oil, and the third one is still almost full of oil Basically, I wasted my money, Very disappointed! :-(”
