The match case within the Firefly is waterproof and holds up to 25 matches, which can be used with the replaceable striker on the exterior. A Convenient carabiner clip also spouts a useful bottle opener at its base. The LED flashlight is button operated, and runs on 2 included CR-2032 batteries. This version of the Firefly includes a box of 25 UCO Stormproof Matches and 2 additional strikers.