Review (1/5): the battery doesn't work
So to use this, you plug the mouth piece into a battery. The battery on my 1st purchase didn't turn on after hours of charging. So they replaced it. The 2nd one worked at first. Then I put it in storage for a few months, and when I took it back out to use it again, the battery won't work. It's the same problem, it's been on the charger for hours, and it won't turn on. Don't waste your money