Big Bulbs String Light Necklace is perfect for 4th of July! Perhaps you need a Red, White & Blue Light Bulb Necklace for Memorial Day occasions, election year events, America-themed parties...Basically, USA themed bulb necklaces are the perfect way to show everyone these colors don't run. To activate your Jumbo Bulb LED Light Necklace, remove battery protector and press button located on battery house for 3 light functions: Strobe, Fast Flash, and Random Flash/Pulse. Features 5 red, 4 white, and 4 blue LEDs. Big Bulbs String Light Necklace for 4th of July comes ready to use with 3 replaceable AG13 Batteries.