The Smith & Wesson SWPEN2 is a tactical/survival writing instrument that can also be used for self-defense. The anodized aluminum body is strong and lightweight. The top has a pocket clip for convenient carry and glass breaker tip for emergency. This is a retractable pen; simply twist to open and close. The pen has a ferro rod that when struck with the pen head produces a spark to start a fire in an emergency survival situation. The ferro rod is stored in the handle, ready when needed, but out of sight otherwise. If you are looking for a smaller everyday carry, the pen can be attached directly to the key ring cap. This is a great new addition to the Smith & Wesson pen line.