This beautiful mermaid necklace not only looks awesome in the day, it also glows in the dark! Just charge with sunlight or included UV flashlight. This necklace comes with a pocket-sized UV flashlight for a super fast charge (great for when the sun is not out)! Great for gift giving. Pendant is 1" (25mm) and is available in antique bronze or silver finish. Chain length options available, lobster claw clasp. Also includes a 2" chain extension for easy length adjustment. Child size options are also available. Is this a gift? No worries...it will include instructions professionally printed on a postcard. The recipient will clearly understand it glows, and how to make it glow. Comes in a velvet clam shell gift box for easy gift giving!