I will NEVER Order Ever Again I have been ordering yocan xl dab pens for a year bought tend of them every single one of the buttons went bad on the batteries. They are defective and they probably are selling it knowing this. I went to Optimal Vapors  guess what no issues using both batteries the buttons have spring and they do not break. A few weeks ago ordered two more batteries from LighterUSA guess what? They forgot to seal the envelope their was no product in there. I made a complaint never was given a solution already filed with the post office but explained to them that I have the empty envelope which was not sealed its not ripped therefore its on their end. They will not replace the batteries, reply back to me and customer service was terrible. DO NOT I repeat DO NOT order from this place. They could ship me two batteries which came to 25 dollars because I used a coupon or I can take away thousands of dollars worth of customer business. They made their choice now I am making MINE. The best 25 dollars I ever spent thanks Lighterusa for the crappy service!