Fireflies #1Your eyes aren't playing tricks on you this necklace really does light up! Tiny LED twinkle lights are woven into the wirework, and a lightweight battery pack with an on off switch dangles from the clasp at the back it can be tucked into your hair or inside your collar. My beta testers all report that these necklaces are comfortable to wear, and very eye catching! Vintage crystal and glass, silver wire, LED bulbs. This necklace is a tiny bit over 20"