This is one cool little gadget. It's a cigarette lighter which is designed to work like a box of matches.
There are 2 parts to it:
1) The cylindrical box part that you strike the match on and that contains the lighter fluid.
2) The match part is a metal strike device which creates sparks when struck on the flint on one side of the box and ignites the wick on the end of the match.
The match part screws into the box part for easy storage and so that the wick is soaked with lighter fluid so it lights when it comes into contact with the sparks. It's refillable with ordinary lighter fluid and can be lit thousands of times. You strike the match on the side of the box part. How clever is that! This lighter is waterproof and can be lit in wet conditions.
Measures only 6cm or 2.5 inches in length by 1.9cm or 0.7 inches and so it will fit in your wallet, purse or pocket with ease. It also has a key-ring attachment. It is also pretty light in weight. There will be written instructions included with your order so you or the person you are buying the lighter for will know how to use it.