Here's a bright idea! Kick off your next party in a fun way using these extra-large LED pendant necklaces! With a wide variety of LED colors and unique plastic medallions, you're bound to find one for your next promotion. To activate the LED lights, simply press the on/off button located on the rectangle above the pendant and select from three different light modes: fast flash, slow flash and steady on. Just add an imprinted company name or logo and you'll be ready to go. Batteries are included and installed .