Lampsbuyer Bike Red Eye Devil Skull Tail Light, Laser Caution Light 2 Red parallel laser design , ensure night riding safety Safety light is great for Bicycles, strollers, joggers, hiking. walking, playing sports, events, car emergencies, camping Switch: button, 8 modes of flash mode by pressing the button Powered by 2 AAA batteries(not included), no need to charge 180 degree adjustable holder