Review on Wollet Keychain Multitool: Flint Metal Matchstick Fire Starter, Bottle Opener, and More - Versatile EDC Gift for Emergency Survival by John Rocha

The idea is great but the execution is not very good. You'll need to take butane with you to refill if you're going to leave it for more than a day. The flint also wears out quickly and there is no substitute. I've also gone through both wicks and haven't taken it on a hike yet. It's just not implemented very well. I was very happy about this delivery and was then totally disappointed.