for an emergency backup fire starter ?  eh, ok I guess, but I prefer the magnesuim block fire starters, as you can shave the magnesuim off to have some tinder as well as making sparks

when I want to start a fire, I just use matches - they work
they work a lot better than a sparkler for lighting my coleman lantern and my stoves too

not saying there is anything wrong wtih that product, I just don't see the point  - strike a match or flick your bic - seems easier to me