Great to be able to refill. Great build quality. Much cheaper to run. Good draw. Would recommend to anyone.
Has really long battery life, and is really easy to refill and use would recommend this to a friend!
This device is so easy to use and very unobtrusive.
great system easy to use
Its easy to use, but the first cartidge easily broke. Besides that, you just have to find the sweet spot so that you dont cough.