If you're looking for a bright idea for your next promotional campaign, this blue light bulb light-up acrylic pendant necklace is a perfect fit! Measuring 24", this illuminating item will create a brilliant promotion thanks to the high-powered LED lights, which put on a dazzling display with one of three lighted modes: slow blink, fast blink and constant on. Batteries are included and installed. This is a choking hazard not suitable for children under three years old. Customize with an imprint of your company name and logo for increased brand visibility.