Purchased a DRAGON e-cigarette. From the moment I opened the package and tried to add the vape juice the cartridge leaked from the bottom. Never used it once. Customer service, as I use the term lightly, has done nothing to resolve the issue. It appears you are purchasing from the US, you are not, it is China. Never ever purchase from this company. May as well be throwing your money out the window. User's recommendation: Buy elsewhere.