Whether you call it a "firefly", a "lightning bug" or something else entirely, there is no argument that these cute firefly necklaces will make kids smile. A squeeze of the dragonfly produces a beam of light, making these necklaces particularly good for kids’ giveaways at evening events. Also great as party favors or as prizes in the classroom, these necklaces will get kids buzzing! Plastic. Each 6.99cm pendant hangs on a 61cm cord with a breakaway clasp. Includes batteries.