4 stars because I use this lighter for a few days, I would see over time if it functions to add one star. Otherwise it's great as a key ring, it helps out really well and even lighter every day, just one clarification concerning the delivery, do not take into account the deadline given by amazon because right after ordering and thus paid thinking receive on Christmas Eve, I get an email from the seller stating to me that the given time by amazon is only theoretical and they themselves committed so nothing serious because it was delivered a few days later but I think it is really important to specify in the product description as well pissed me this email instantly. That if that helps ... otherwise perfect product value.
