The truth isn't out there - it's right here! Flashing Alien Eyes LED Headband is a whacky good time of a headband. Complete with two white light flashing alien eyes atop a one-size-fits-all headband, everyone from kids to adults can have a great time with Alien Eye Hair Bands. To activate flashing lights on Green Alien Headbands, flip switch behind left eye. 1 function only: Flashing. Flashing Alien Eyes LED Headband comes ready to use with 3 replaceable AG13 Batteries.