Terrible- save your money. I bought a disposable igreenvape at duckweed grocery in downtown Tampa, and it lasted less than 50 puffs, then I returned it thinking it was a dud for another. It was not a dud, they will all last about 50 puffs. the company falsely advertises 500 puffs. When I called customer service, they acted like it never happened before. The customer service guy was annoyed and rude. Just another fly-by-night vape company looking to cash and dash on an inferior product. Do not fall victim..