They are fire extinguishers and they work. They are compact. Most people never use them and when they do it's on another persons rig that is on fire. When I camp I carry a standard Amerex because everybody knows how to use it and in an emergency I don't have to give a lecture on how to use it. I think that's an advantage but the more people that learn about these newer tech deals the better.I'm interested in the Element. 50 sec or 100 sec? Inquiring minds want to know.