The advantage of a flint over other fire-starters is that the flint has no components that can leak or malfunction as such. They are also waterproof, and will work in the wet.
It is worth practicing with your flint to get the hang of making sparks with it. Hold the striker at an angle and strike down the length of the rod to create sparks. I often use it to light my gas stove: just be careful — don’t get too close and singe your eyebrows as I have done!
I have another flint that consists of a block of magnesium attached to a flint rod with a striker. The striker has a serrated edge to shave magnesium shavings off the block. You then ignite these using the flint.
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