Turn any LyfeLite Bulb into a portable light source with the integrated switch and hook. Unscrew the LyfeLite bulb from its socket and screw it into the LyfeLite Power Cap for use anywhere in your home. That's right you can travel with your light bolb like a flashlight or hang it in a hard to see area like a closet. Turn on or off with the push-button switch on the cap. Hang it anywhere with the built-in hook.