Abstract: A portable magnetically actuatable flashlight that includes a hermetically sealed housing that has the light transmitting lens formed as an integral part thereof, and the housing capable of having an electric circuit defining cartridge on which the battery, light emitting bulb, light reflector, and electric circuit completing switch are mounted to be inserted into or removed from the housing. The electric switch is of the reed type, and is actuated to assume a closed position when a movable permanent magnet disposed exteriorly of the housing is moved to a first position for the magnetic field of the magnet to temporarily dispose the switch in an electric circuit completing position.