Nickqin Halloween Christmas New Year Party Neon EL Electroluminescent Light Costume Mask Glasses - Purple/Blue (White Frame) They are great for Halloween, any fun time of the year. Such as New Year, Christmas, or any fun occasion. When you press the button, you would find the light has Four modes: constant light, slow flashing light and flashing light and shut off. Our products are best use for every age group. Has battery case controller switch button. You can use it indoors or out. Power: 1.5V 2 x AA batteries (not included)