The gas Zippos are a good thing - for those who - like the knowledge to appreciate the advantages of a Zippo without gasoline. The lighter has a curved line which the BLU-series differs from the standard petrol lighters. In addition, of course, exists in the inner no flint, but an "accelerator". The flame is at the beginning very large and there is an immediate danger to the eyebrows light when cigarettes. Meanwhile, according to the third charge, the flame has however leveled by itself ... I now use exclusively this Zippo and am satisfied from the quality. The gas tank holds with me for about a week. A star deduction gets the BLU series of mine because the accelerator described above is made of plastic and does not begin to exude the charm from the flint. Here I would have found appropriate for example a metal lever ...