Wanna stand out in a party with you and all your friends? Well you can light up then night with these awesome flashing LED shutter shades! Push the button between the lenses to change the flashing mode or push the button 3 times to make the lights stay on with no flash. Product is for novelty purposes and should not be worn when optimum visual conditions are required such as driving. Product contains 3 batteries, included, non-replaceable.