It contains a luminous bead that can be recharged under sunlight or UV light for best results. The glowing bat necklace makes it especially vibrant and eye-catching in the dark.Material: This beautiful bat necklace is made from genuine metal.It glows in the dark! It's whimsical, yet intricate design works with nearly any outfit! Its functional design makes it unique!Pendant Size: 0.61* 0.88* 0.32 inch, Weight: 5 g; Chain Length: 18 Inch +2 Inch.Conjure up your confidence when you strut around your Halloween town wearing this artisan luminous bat pendant. An excellent gift for loved ones who love cute, exquisite accessories or for yourself.Apoite use the high quality material, our aim is to be original, inspiring and meaningful. Please feel free to if you have any problem about product, we''ll try our best to make you satisfaction. Thank you