I should have looked but I didn't and its gone back now. I would guess it was 4 hole as it was bought within the last few weeks. The only way I could get a decent throat hit from it was dripping directly onto the atomiser - and that can be a messy business when its exposed like that.
Have to say tho, like others have, that intellicig seems to have really good customer service - John offered a refund immediately.
Can't seem to "quote message in reply" maybe because I'm a newbie?