Tired of stopping to play when the sun goes down? Swap the regular Gellets with Starfire Gellets. With the Gel Blaster STARFIRE ACTIVATOR, you don't have to be afraid of the dark anymore. To use the Starfire Activator, simply remove the cartridge and the filler neck from the Gel Blaster. Insert 2 AAA batteries into your Starfire Activator, attach a cartridge to it, and slide the activator back onto your Gel Blaster. After that, just press the green power button and in no time you will be ready to play under the stars.