Aoloshow Fairy Magical Fire Glowing Necklace Glow in the Dark Necklaces Direct sunlight, high wattage bulbs, or black lights are needed to obtain the maximum glow The glow will gradually fade until recharged. It can be recharged over and over. Great gift for everyone even yourself ! Chain length: 76cm=29.9", Pendant size: 0.78"*0.78"