I went nuts when I saw this lighter torch in dealextreme. Ordered two.
And it was nice to have bought two because one came with defect. Even so, what worked was having a problem with crashes that calls constant. You have to keep pressing to work.
They always come empty, IE, without butane gas you purchase at any tobacconist. It's not too expensive, a can of butane costs about 53 ha.and 25 ha beside and often fills the lighter container. In the pictures below you can see the nozzle of the butane canister and the entry of the lighters. It's just fit together and start filling.
After the disaster of the first torch I decided to buy another and, to my surprise, a cheaper is much better. The lock works fine and the flame is firmer. A beauty!