Wear Blue Horned Devil Headband with LEDs for naughty style. These brilliant blue devil horns are perfect for parties, pubs and parades! Instructions: To activate the glowing blue devil horns simply turn the switch above the battery pack to the ON position. These light up devil horns are one size fits most. Note: This item has a still light function when on, it does not flash or blink. Dimensions: Height: 6.0 in. Width: 6.5 in. LED Colors: 2 Blue. Batteries: Each of the glowing horns includes 4 AG13 Batteries. Batteries for this item are replaceable. Packaging: Each Devil Horn headband is packaged in a clear plastic bag.