Item Type: Pendant Necklaces Metal Type: Zinc Alloy Gender: Women Main Stone: None Fine or Fashion: Fashion Necklace Type: Black Leather Shape\pattern: Hexagon Style: Trendy, Creative Occasion: Casual, Gift Customized: Yes (Glow) Color: Green, Aqua, Blue Necklace Length: 40+5cm (17.7") Pendant Length: 32*8 mm P/S* This is a luminous necklace. Place under the sun for a few minutes or illuminate it with the flashlight of your mobile phone or any flashlight for a few minutes. Next, put it in the dark and it will glow.