Illuminate your luau with Light Up Hawaiian Leis! They make great Luau Party Favors! . Enjoy them at the beach or in the comfort of your own backyard. You can even use them in the daytime because they look great when they're not turned on. Prior to activation, remove plastic insert located on battery housing. Press the button on the battery housing once to activate, to deactivate press again. Multicolored Light Up Hawaiian Leis have one light function, to flash on and off quickly. 3 AG13 batteries are included and replaceable.