Bear&Pear glow-in-the-dark luminous winged heart necklace. The glow color is blue. Length Chain length: 48 cm. Since the product is kept in the dark for a long time during the shipping, it will be beneficial to hold it to intense light (fluorescent light, mobile phone flash, etc.) when you first buy it. Product detail: - size: 3 cm x 2 cm - chain length: 48 cm - material: metal - weight: 15 g