Fiber Optic Finger Lights really wow the crowd! These unique marketing products will make an impression at clubs and fairs. Each LED matches its plastic housing unit. To activate, slide the switch on top of the battery house. Finger Light Beams with Fiber Optics do not flash or blink; they are a steady beautiful light. Comes ready to use with non-replaceable batteries. One size fits most. Adjustable finger velcro strap.