We could suggest better if you are set on a slim ecig.
The kit is overpriced.
He doesn't tell you the threading. You may have to
buy all supplies thru his website. His cartos are about 5 dollars per box more than other places. I checked Vapor4Life which sells prefilled cartos for KR808-D1
batteries. I have no idea what threading the EON is.
It doesn't tell how you how many mah the battery has. He says the battery will last 1 to 3 days. At the very most, a slim ecig is 300 mah and will last 3 hrs. of moderate
vaping.
He says a carto is equal to 2 pks of cigs....No, even a light to moderate smoker will go thru 2 cartos per day.