Introducing our dynamic Blue LED 27" Necklaces, the perfect accessory for any occasion! Crafted from flexible plastic and adorned with blue LED fiber optics throughout, these necklaces are designed to dazzle both day and night. With just a click of the on/off button, you can choose from 4 thrilling flashing light functions, adding an extra touch of excitement to any event. These versatile blue LED necklaces can be easily opened, closed, and attached to each other, allowing you to create a customized length of light rope. Ideal for parties, parades, floats, bars, and more, these fiber optic necklaces are sure to make a statement. Mix and match colors for school spirit activities or Halloween costumes. Each necklace comes complete with 3 AG13 batteries, which are included, installed, and replaceable, ensuring long-lasting fun. Don't miss out on the opportunity to light up the night with our Blue LED Necklaces!